diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ab786e..610ff0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [5.0.2](https://github.com/webpack-contrib/compression-webpack-plugin/compare/v5.0.1...v5.0.2) (2020-09-02)
+
+
+### Bug Fixes
+
+* do not crash when the `algorithm` option return non `Buffer` ([#190](https://github.com/webpack-contrib/compression-webpack-plugin/issues/190)) ([81bf601](https://github.com/webpack-contrib/compression-webpack-plugin/commit/81bf60166caeeea9f5d5a18e1471ed0f7a28c312))
+
 ### [5.0.1](https://github.com/webpack-contrib/compression-webpack-plugin/compare/v5.0.0...v5.0.1) (2020-08-22)
 
 
diff --git a/package-lock.json b/package-lock.json
index 0c1e619..e860bcc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "compression-webpack-plugin",
-  "version": "5.0.1",
+  "version": "5.0.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 72934e1..b5cb54a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "compression-webpack-plugin",
-  "version": "5.0.1",
+  "version": "5.0.2",
   "description": "Prepare compressed versions of assets to serve them with Content-Encoding",
   "license": "MIT",
   "repository": "webpack-contrib/compression-webpack-plugin",
diff --git a/src/Webpack4Cache.js b/src/Webpack4Cache.js
index 144b0ca..e53831f 100644
--- a/src/Webpack4Cache.js
+++ b/src/Webpack4Cache.js
@@ -17,8 +17,8 @@ export default class Webpack4Cache {
     return findCacheDir({ name: 'compression-webpack-plugin' }) || os.tmpdir();
   }
 
-  async get(task, sources) {
-    const weakOutput = this.weakCache.get(task.assetSource);
+  async get(cacheData, sources) {
+    const weakOutput = this.weakCache.get(cacheData.source);
 
     if (weakOutput) {
       return weakOutput;
@@ -30,12 +30,13 @@ export default class Webpack4Cache {
     }
 
     // eslint-disable-next-line no-param-reassign
-    task.cacheIdent = task.cacheIdent || serialize(task.cacheKeys);
+    cacheData.cacheIdent =
+      cacheData.cacheIdent || serialize(cacheData.cacheKeys);
 
     let cachedResult;
 
     try {
-      cachedResult = await cacache.get(this.cache, task.cacheIdent);
+      cachedResult = await cacache.get(this.cache, cacheData.cacheIdent);
     } catch (ignoreError) {
       // eslint-disable-next-line no-undefined
       return undefined;
@@ -46,9 +47,9 @@ export default class Webpack4Cache {
     );
   }
 
-  async store(task) {
-    if (!this.weakCache.has(task.assetSource)) {
-      this.weakCache.set(task.assetSource, task.output);
+  async store(cacheData) {
+    if (!this.weakCache.has(cacheData.source)) {
+      this.weakCache.set(cacheData.source, cacheData.output);
     }
 
     if (!this.cache) {
@@ -56,7 +57,7 @@ export default class Webpack4Cache {
       return undefined;
     }
 
-    const { cacheIdent, output } = task;
+    const { cacheIdent, output } = cacheData;
 
     return cacache.put(this.cache, cacheIdent, JSON.stringify(output.source()));
   }
diff --git a/src/Webpack5Cache.js b/src/Webpack5Cache.js
index 2bbcb89..2b9d32a 100644
--- a/src/Webpack5Cache.js
+++ b/src/Webpack5Cache.js
@@ -3,14 +3,19 @@ export default class Cache {
     this.cache = compilation.getCache('CompressionWebpackPlugin');
   }
 
-  async get(task) {
+  async get(cacheData) {
     // eslint-disable-next-line no-param-reassign
-    task.eTag = task.eTag || this.cache.getLazyHashedEtag(task.assetSource);
+    cacheData.eTag =
+      cacheData.eTag || this.cache.getLazyHashedEtag(cacheData.source);
 
-    return this.cache.getPromise(task.assetName, task.eTag);
+    return this.cache.getPromise(cacheData.assetName, cacheData.eTag);
   }
 
-  async store(task) {
-    return this.cache.storePromise(task.assetName, task.eTag, task.output);
+  async store(cacheData) {
+    return this.cache.storePromise(
+      cacheData.assetName,
+      cacheData.eTag,
+      cacheData.output
+    );
   }
 }
diff --git a/src/index.js b/src/index.js
index dc5b66e..c20a2c9 100644
--- a/src/index.js
+++ b/src/index.js
@@ -137,7 +137,7 @@ class CompressionPlugin {
     delete compilation.assets[name];
   }
 
-  compress(input) {
+  runCompressionAlgorithm(input) {
     return new Promise((resolve, reject) => {
       const { algorithm, compressionOptions } = this;
 
@@ -146,133 +146,131 @@ class CompressionPlugin {
           return reject(error);
         }
 
+        if (!Buffer.isBuffer(result)) {
+          // eslint-disable-next-line no-param-reassign
+          result = Buffer.from(result);
+        }
+
         return resolve(result);
       });
     });
   }
 
-  *getTask(compilation, assetName) {
-    const { source: assetSource, info: assetInfo } = CompressionPlugin.getAsset(
-      compilation,
-      assetName
+  async compress(compilation, assets, CacheEngine, weakCache) {
+    const assetNames = Object.keys(
+      typeof assets === 'undefined' ? compilation.assets : assets
+    ).filter((assetName) =>
+      // eslint-disable-next-line no-undefined
+      ModuleFilenameHelpers.matchObject.bind(undefined, this.options)(assetName)
     );
 
-    if (assetInfo.compressed) {
-      yield false;
-    }
-
-    let relatedName;
-
-    if (typeof this.options.algorithm === 'function') {
-      let filenameForRelatedName = this.options.filename;
-
-      const index = filenameForRelatedName.lastIndexOf('?');
-
-      if (index >= 0) {
-        filenameForRelatedName = filenameForRelatedName.substr(0, index);
-      }
-
-      relatedName = `${path.extname(filenameForRelatedName).slice(1)}ed`;
-    } else {
-      relatedName = `${this.options.algorithm}ed`;
-    }
-
-    if (assetInfo.related && assetInfo.related[relatedName]) {
-      yield false;
+    if (assetNames.length === 0) {
+      return Promise.resolve();
     }
 
-    let input = assetSource.source();
-
-    if (!Buffer.isBuffer(input)) {
-      input = Buffer.from(input);
-    }
+    const scheduledTasks = [];
+    const cache = new CacheEngine(
+      compilation,
+      { cache: this.options.cache },
+      weakCache
+    );
 
-    if (input.length < this.options.threshold) {
-      yield false;
-    }
+    for (const assetName of assetNames) {
+      scheduledTasks.push(
+        (async () => {
+          const { source, info } = CompressionPlugin.getAsset(
+            compilation,
+            assetName
+          );
 
-    const task = { assetName, assetSource, assetInfo, input, relatedName };
+          if (info.compressed) {
+            return;
+          }
 
-    if (CompressionPlugin.isWebpack4()) {
-      task.cacheKeys = {
-        nodeVersion: process.version,
-        // eslint-disable-next-line global-require
-        'compression-webpack-plugin': require('../package.json').version,
-        algorithm: this.algorithm,
-        originalAlgorithm: this.options.algorithm,
-        compressionOptions: this.compressionOptions,
-        assetName,
-        contentHash: crypto.createHash('md4').update(input).digest('hex'),
-      };
-    }
+          let relatedName;
 
-    yield task;
-  }
+          if (typeof this.options.algorithm === 'function') {
+            let filenameForRelatedName = this.options.filename;
 
-  afterTask(compilation, task) {
-    const { output, input } = task;
+            const index = filenameForRelatedName.lastIndexOf('?');
 
-    if (output.source().length / input.length > this.options.minRatio) {
-      return;
-    }
+            if (index >= 0) {
+              filenameForRelatedName = filenameForRelatedName.substr(0, index);
+            }
 
-    const { assetSource, assetName } = task;
-    const newAssetName = CompressionPlugin.interpolateName(
-      assetName,
-      this.options.filename
-    );
+            relatedName = `${path.extname(filenameForRelatedName).slice(1)}ed`;
+          } else {
+            relatedName = `${this.options.algorithm}ed`;
+          }
 
-    CompressionPlugin.emitAsset(compilation, newAssetName, output, {
-      compressed: true,
-    });
+          if (info.related && info.related[relatedName]) {
+            return;
+          }
 
-    if (this.options.deleteOriginalAssets) {
-      // eslint-disable-next-line no-param-reassign
-      CompressionPlugin.deleteAsset(compilation, assetName);
-    } else {
-      CompressionPlugin.updateAsset(compilation, assetName, assetSource, {
-        related: { [task.relatedName]: newAssetName },
-      });
-    }
-  }
+          let input = source.source();
 
-  async runTasks(compilation, assetNames, CacheEngine, weakCache) {
-    const scheduledTasks = [];
-    const cache = new CacheEngine(
-      compilation,
-      {
-        cache: this.options.cache,
-      },
-      weakCache
-    );
+          if (!Buffer.isBuffer(input)) {
+            input = Buffer.from(input);
+          }
 
-    for (const assetName of assetNames) {
-      scheduledTasks.push(
-        (async () => {
-          const task = this.getTask(compilation, assetName).next().value;
+          if (input.length < this.options.threshold) {
+            return;
+          }
 
-          if (!task) {
-            return Promise.resolve();
+          const cacheData = { source };
+
+          if (CompressionPlugin.isWebpack4()) {
+            cacheData.cacheKeys = {
+              nodeVersion: process.version,
+              // eslint-disable-next-line global-require
+              'compression-webpack-plugin': require('../package.json').version,
+              algorithm: this.algorithm,
+              originalAlgorithm: this.options.algorithm,
+              compressionOptions: this.compressionOptions,
+              assetName,
+              contentHash: crypto.createHash('md4').update(input).digest('hex'),
+            };
+          } else {
+            cacheData.assetName = assetName;
           }
 
-          task.output = await cache.get(task, { RawSource });
+          let output = await cache.get(cacheData, { RawSource });
 
-          if (!task.output) {
+          if (!output) {
             try {
-              // eslint-disable-next-line no-param-reassign
-              task.output = new RawSource(await this.compress(task.input));
+              output = new RawSource(await this.runCompressionAlgorithm(input));
             } catch (error) {
               compilation.errors.push(error);
 
-              return Promise.resolve();
+              return;
             }
 
-            await cache.store(task);
+            cacheData.output = output;
+
+            await cache.store(cacheData);
           }
 
-          this.afterTask(compilation, task);
+          if (output.source().length / input.length > this.options.minRatio) {
+            return;
+          }
 
-          return Promise.resolve();
+          const newAssetName = CompressionPlugin.interpolateName(
+            assetName,
+            this.options.filename
+          );
+
+          CompressionPlugin.emitAsset(compilation, newAssetName, output, {
+            compressed: true,
+          });
+
+          if (this.options.deleteOriginalAssets) {
+            // eslint-disable-next-line no-param-reassign
+            CompressionPlugin.deleteAsset(compilation, assetName);
+          } else {
+            CompressionPlugin.updateAsset(compilation, assetName, source, {
+              related: { [relatedName]: newAssetName },
+            });
+          }
         })()
       );
     }
@@ -286,29 +284,6 @@ class CompressionPlugin {
 
   apply(compiler) {
     const pluginName = this.constructor.name;
-    const matchObject = ModuleFilenameHelpers.matchObject.bind(
-      // eslint-disable-next-line no-undefined
-      undefined,
-      this.options
-    );
-    const compressionFn = async (
-      compilation,
-      assets,
-      CacheEngine,
-      weakCache
-    ) => {
-      const assetNames = Object.keys(
-        typeof assets === 'undefined' ? compilation.assets : assets
-      ).filter((assetName) => matchObject(assetName));
-
-      if (assetNames.length === 0) {
-        return Promise.resolve();
-      }
-
-      await this.runTasks(compilation, assetNames, CacheEngine, weakCache);
-
-      return Promise.resolve();
-    };
 
     if (CompressionPlugin.isWebpack4()) {
       // eslint-disable-next-line global-require
@@ -317,7 +292,7 @@ class CompressionPlugin {
 
       compiler.hooks.emit.tapPromise({ name: pluginName }, (compilation) =>
         // eslint-disable-next-line no-undefined
-        compressionFn(compilation, undefined, CacheEngine, weakCache)
+        this.compress(compilation, undefined, CacheEngine, weakCache)
       );
     } else {
       // eslint-disable-next-line global-require
@@ -332,7 +307,7 @@ class CompressionPlugin {
             name: pluginName,
             stage: Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_TRANSFER,
           },
-          (assets) => compressionFn(compilation, assets, CacheEngine)
+          (assets) => this.compress(compilation, assets, CacheEngine)
         );
 
         compilation.hooks.statsPrinter.tap(pluginName, (stats) => {
@@ -340,9 +315,9 @@ class CompressionPlugin {
             .for('asset.info.compressed')
             .tap(
               'compression-webpack-plugin',
-              (minimized, { green, formatFlag }) =>
+              (compressed, { green, formatFlag }) =>
                 // eslint-disable-next-line no-undefined
-                minimized ? green(formatFlag('compressed')) : undefined
+                compressed ? green(formatFlag('compressed')) : undefined
             );
         });
       });
diff --git a/test/CompressionPlugin.test.js b/test/CompressionPlugin.test.js
index 706a937..9258b39 100644
--- a/test/CompressionPlugin.test.js
+++ b/test/CompressionPlugin.test.js
@@ -172,7 +172,7 @@ describe('CompressionPlugin', () => {
     expect(getErrors(stats)).toMatchSnapshot('warnings');
   });
 
-  it('should work in watch mode', async () => {
+  it('should work and use weak cache', async () => {
     const compiler = getCompiler('./entry.js');
 
     new CompressionPlugin().apply(compiler);
@@ -214,7 +214,7 @@ describe('CompressionPlugin', () => {
     });
   });
 
-  it('should work in watch mode when "cache" is "false"', async () => {
+  it('should work and use weak cache when "cache" is "false"', async () => {
     if (getCompiler.isWebpack4()) {
       expect(true).toBe(true);
     } else {
@@ -243,4 +243,32 @@ describe('CompressionPlugin', () => {
       });
     }
   });
+
+  it('should work and show compress assets in stats', async () => {
+    const compiler = getCompiler(
+      './entry.js',
+      {},
+      {
+        stats: 'verbose',
+        output: {
+          path: `${__dirname}/dist`,
+          filename: '[name].js',
+          chunkFilename: '[id].[name].js',
+        },
+      }
+    );
+
+    new CompressionPlugin().apply(compiler);
+
+    const stats = await compile(compiler);
+    const stringStats = stats.toString({ relatedAssets: true });
+    const printedCompressed = stringStats.match(/\[compressed]/g);
+
+    expect(printedCompressed ? printedCompressed.length : 0).toBe(
+      getCompiler.isWebpack4() ? 0 : 3
+    );
+    expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+    expect(getWarnings(stats)).toMatchSnapshot('errors');
+    expect(getErrors(stats)).toMatchSnapshot('warnings');
+  });
 });
diff --git a/test/__snapshots__/CompressionPlugin.test.js.snap.webpack4 b/test/__snapshots__/CompressionPlugin.test.js.snap.webpack4
index dd586a7..f731d33 100644
--- a/test/__snapshots__/CompressionPlugin.test.js.snap.webpack4
+++ b/test/__snapshots__/CompressionPlugin.test.js.snap.webpack4
@@ -1,87 +1,43 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`CompressionPlugin should work child compilations: assets 1`] = `
+exports[`CompressionPlugin should work and show compress assets in stats: assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
     78117,
-    Object {},
   ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg",
     672,
-    Object {
-      "related": Object {
-        "gziped": "23fc1d3ac606d117e05a140e0de79806.svg.gz",
-      },
-    },
   ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg.gz",
     393,
-    Object {
-      "compressed": true,
-    },
-  ],
-  Array [
-    "async.async.js.gz",
-    171,
-    Object {
-      "compressed": true,
-    },
   ],
   Array [
-    "async.async.js?ver=810493800e70254b803c",
+    "async.async.js",
     249,
-    Object {
-      "immutable": true,
-      "related": Object {
-        "gziped": "async.async.js.gz",
-      },
-    },
   ],
   Array [
-    "copied.js",
-    400,
-    Object {
-      "copied": true,
-      "related": Object {
-        "gziped": "copied.js.gz",
-      },
-    },
+    "async.async.js.gz",
+    171,
   ],
   Array [
-    "copied.js.gz",
-    29,
-    Object {
-      "compressed": true,
-    },
+    "main.js",
+    11595,
   ],
   Array [
     "main.js.gz",
-    3001,
-    Object {
-      "compressed": true,
-    },
-  ],
-  Array [
-    "main.js?var=810493800e70254b803c",
-    11627,
-    Object {
-      "immutable": true,
-      "related": Object {
-        "gziped": "main.js.gz",
-      },
-    },
+    2974,
   ],
 ]
 `;
 
-exports[`CompressionPlugin should work child compilations: errors 1`] = `Array []`;
+exports[`CompressionPlugin should work and show compress assets in stats: errors 1`] = `Array []`;
 
-exports[`CompressionPlugin should work child compilations: warnings 1`] = `Array []`;
+exports[`CompressionPlugin should work and show compress assets in stats: warnings 1`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode: assets 1`] = `
+exports[`CompressionPlugin should work and use weak cache: assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
@@ -114,7 +70,7 @@ Array [
 ]
 `;
 
-exports[`CompressionPlugin should work in watch mode: assets 2`] = `
+exports[`CompressionPlugin should work and use weak cache: assets 2`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
@@ -147,13 +103,94 @@ Array [
 ]
 `;
 
-exports[`CompressionPlugin should work in watch mode: errors 1`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache: errors 1`] = `Array []`;
+
+exports[`CompressionPlugin should work and use weak cache: errors 2`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode: errors 2`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache: warnings 1`] = `Array []`;
+
+exports[`CompressionPlugin should work and use weak cache: warnings 2`] = `Array []`;
+
+exports[`CompressionPlugin should work child compilations: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+    Object {},
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+    Object {
+      "related": Object {
+        "gziped": "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+      },
+    },
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+    Object {
+      "compressed": true,
+    },
+  ],
+  Array [
+    "async.async.js.gz",
+    171,
+    Object {
+      "compressed": true,
+    },
+  ],
+  Array [
+    "async.async.js?ver=810493800e70254b803c",
+    249,
+    Object {
+      "immutable": true,
+      "related": Object {
+        "gziped": "async.async.js.gz",
+      },
+    },
+  ],
+  Array [
+    "copied.js",
+    400,
+    Object {
+      "copied": true,
+      "related": Object {
+        "gziped": "copied.js.gz",
+      },
+    },
+  ],
+  Array [
+    "copied.js.gz",
+    29,
+    Object {
+      "compressed": true,
+    },
+  ],
+  Array [
+    "main.js.gz",
+    3001,
+    Object {
+      "compressed": true,
+    },
+  ],
+  Array [
+    "main.js?var=810493800e70254b803c",
+    11627,
+    Object {
+      "immutable": true,
+      "related": Object {
+        "gziped": "main.js.gz",
+      },
+    },
+  ],
+]
+`;
 
-exports[`CompressionPlugin should work in watch mode: warnings 1`] = `Array []`;
+exports[`CompressionPlugin should work child compilations: errors 1`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode: warnings 2`] = `Array []`;
+exports[`CompressionPlugin should work child compilations: warnings 1`] = `Array []`;
 
 exports[`CompressionPlugin should work with assets info: assets 1`] = `
 Array [
diff --git a/test/__snapshots__/CompressionPlugin.test.js.snap.webpack5 b/test/__snapshots__/CompressionPlugin.test.js.snap.webpack5
index 97924e7..9e1271a 100644
--- a/test/__snapshots__/CompressionPlugin.test.js.snap.webpack5
+++ b/test/__snapshots__/CompressionPlugin.test.js.snap.webpack5
@@ -1,99 +1,43 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`CompressionPlugin should work child compilations: assets 1`] = `
+exports[`CompressionPlugin should work and show compress assets in stats: assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
     78117,
-    Object {
-      "size": 78117,
-    },
   ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg",
     672,
-    Object {
-      "related": Object {
-        "gziped": "23fc1d3ac606d117e05a140e0de79806.svg.gz",
-      },
-      "size": 672,
-    },
   ],
   Array [
     "23fc1d3ac606d117e05a140e0de79806.svg.gz",
     393,
-    Object {
-      "compressed": true,
-      "size": 393,
-    },
-  ],
-  Array [
-    "async.async.js.gz",
-    181,
-    Object {
-      "compressed": true,
-      "size": 181,
-    },
   ],
   Array [
-    "async.async.js?ver=73440247c3513e8f18d5",
-    269,
-    Object {
-      "fullhash": "73440247c3513e8f18d5",
-      "immutable": true,
-      "related": Object {
-        "gziped": "async.async.js.gz",
-      },
-      "size": 269,
-    },
+    "async.async.js",
+    265,
   ],
   Array [
-    "copied.js",
-    400,
-    Object {
-      "copied": true,
-      "related": Object {
-        "gziped": "copied.js.gz",
-      },
-      "size": 400,
-    },
+    "async.async.js.gz",
+    179,
   ],
   Array [
-    "copied.js.gz",
-    29,
-    Object {
-      "compressed": true,
-      "size": 29,
-    },
+    "main.js",
+    15026,
   ],
   Array [
     "main.js.gz",
-    3584,
-    Object {
-      "compressed": true,
-      "size": 3584,
-    },
-  ],
-  Array [
-    "main.js?var=73440247c3513e8f18d5",
-    15312,
-    Object {
-      "fullhash": "73440247c3513e8f18d5",
-      "immutable": true,
-      "related": Object {
-        "gziped": "main.js.gz",
-      },
-      "size": 15312,
-    },
+    3515,
   ],
 ]
 `;
 
-exports[`CompressionPlugin should work child compilations: errors 1`] = `Array []`;
+exports[`CompressionPlugin should work and show compress assets in stats: errors 1`] = `Array []`;
 
-exports[`CompressionPlugin should work child compilations: warnings 1`] = `Array []`;
+exports[`CompressionPlugin should work and show compress assets in stats: warnings 1`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode when "cache" is "false": assets 1`] = `
+exports[`CompressionPlugin should work and use weak cache when "cache" is "false": assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
@@ -108,25 +52,25 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
 
-exports[`CompressionPlugin should work in watch mode when "cache" is "false": assets 2`] = `
+exports[`CompressionPlugin should work and use weak cache when "cache" is "false": assets 2`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
@@ -141,33 +85,33 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
 
-exports[`CompressionPlugin should work in watch mode when "cache" is "false": errors 1`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache when "cache" is "false": errors 1`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode when "cache" is "false": errors 2`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache when "cache" is "false": errors 2`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode when "cache" is "false": warnings 1`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache when "cache" is "false": warnings 1`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode when "cache" is "false": warnings 2`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache when "cache" is "false": warnings 2`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode: assets 1`] = `
+exports[`CompressionPlugin should work and use weak cache: assets 1`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
@@ -182,25 +126,25 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
 
-exports[`CompressionPlugin should work in watch mode: assets 2`] = `
+exports[`CompressionPlugin should work and use weak cache: assets 2`] = `
 Array [
   Array [
     "09a1a1112c577c2794359715edfcb5ac.png",
@@ -215,31 +159,124 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
 
-exports[`CompressionPlugin should work in watch mode: errors 1`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache: errors 1`] = `Array []`;
+
+exports[`CompressionPlugin should work and use weak cache: errors 2`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode: errors 2`] = `Array []`;
+exports[`CompressionPlugin should work and use weak cache: warnings 1`] = `Array []`;
+
+exports[`CompressionPlugin should work and use weak cache: warnings 2`] = `Array []`;
+
+exports[`CompressionPlugin should work child compilations: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+    Object {
+      "size": 78117,
+    },
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+    Object {
+      "related": Object {
+        "gziped": "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+      },
+      "size": 672,
+    },
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+    Object {
+      "compressed": true,
+      "size": 393,
+    },
+  ],
+  Array [
+    "async.async.js.gz",
+    179,
+    Object {
+      "compressed": true,
+      "size": 179,
+    },
+  ],
+  Array [
+    "async.async.js?ver=3993f67ababcffbe6f05",
+    265,
+    Object {
+      "fullhash": "3993f67ababcffbe6f05",
+      "immutable": true,
+      "related": Object {
+        "gziped": "async.async.js.gz",
+      },
+      "size": 265,
+    },
+  ],
+  Array [
+    "copied.js",
+    400,
+    Object {
+      "copied": true,
+      "related": Object {
+        "gziped": "copied.js.gz",
+      },
+      "size": 400,
+    },
+  ],
+  Array [
+    "copied.js.gz",
+    29,
+    Object {
+      "compressed": true,
+      "size": 29,
+    },
+  ],
+  Array [
+    "main.js.gz",
+    3558,
+    Object {
+      "compressed": true,
+      "size": 3558,
+    },
+  ],
+  Array [
+    "main.js?var=3993f67ababcffbe6f05",
+    15213,
+    Object {
+      "fullhash": "3993f67ababcffbe6f05",
+      "immutable": true,
+      "related": Object {
+        "gziped": "main.js.gz",
+      },
+      "size": 15213,
+    },
+  ],
+]
+`;
 
-exports[`CompressionPlugin should work in watch mode: warnings 1`] = `Array []`;
+exports[`CompressionPlugin should work child compilations: errors 1`] = `Array []`;
 
-exports[`CompressionPlugin should work in watch mode: warnings 2`] = `Array []`;
+exports[`CompressionPlugin should work child compilations: warnings 1`] = `Array []`;
 
 exports[`CompressionPlugin should work with assets info: assets 1`] = `
 Array [
@@ -277,7 +314,7 @@ Array [
     },
   ],
   Array [
-    "async.async.js.map?ver=8cdf224bcea94552590b",
+    "async.async.js.map?ver=18beec7527af02981a38",
     116,
     Object {
       "development": true,
@@ -285,16 +322,16 @@ Array [
     },
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    334,
+    "async.async.js?ver=18beec7527af02981a38",
+    330,
     Object {
-      "fullhash": "8cdf224bcea94552590b",
+      "fullhash": "18beec7527af02981a38",
       "immutable": true,
       "related": Object {
         "gziped": "async.async.js.gz",
-        "sourceMap": "async.async.js.map?ver=8cdf224bcea94552590b",
+        "sourceMap": "async.async.js.map?ver=18beec7527af02981a38",
       },
-      "size": 334,
+      "size": 330,
     },
   ],
   Array [
@@ -318,42 +355,42 @@ Array [
   ],
   Array [
     "main.js.gz",
-    3618,
+    3594,
     Object {
       "compressed": true,
-      "size": 3618,
+      "size": 3594,
     },
   ],
   Array [
     "main.js.map.gz",
-    3586,
+    3564,
     Object {
       "compressed": true,
-      "size": 3586,
+      "size": 3564,
     },
   ],
   Array [
-    "main.js.map?var=8cdf224bcea94552590b",
-    11216,
+    "main.js.map?var=18beec7527af02981a38",
+    11139,
     Object {
       "development": true,
       "related": Object {
         "gziped": "main.js.map.gz",
       },
-      "size": 11216,
+      "size": 11139,
     },
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15373,
+    "main.js?var=18beec7527af02981a38",
+    15274,
     Object {
-      "fullhash": "8cdf224bcea94552590b",
+      "fullhash": "18beec7527af02981a38",
       "immutable": true,
       "related": Object {
         "gziped": "main.js.gz",
-        "sourceMap": "main.js.map?var=8cdf224bcea94552590b",
+        "sourceMap": "main.js.map?var=18beec7527af02981a38",
       },
-      "size": 15373,
+      "size": 15274,
     },
   ],
 ]
@@ -419,41 +456,41 @@ Array [
   ],
   Array [
     "async.async.js.br",
-    181,
+    179,
     Object {
       "compressed": true,
-      "size": 181,
+      "size": 179,
     },
   ],
   Array [
     "async.async.js.compress",
-    181,
+    179,
     Object {
       "compressed": true,
-      "size": 181,
+      "size": 179,
     },
   ],
   Array [
     "async.async.js.custom?foo=bar#hash",
-    181,
+    179,
     Object {
       "compressed": true,
-      "size": 181,
+      "size": 179,
     },
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
     Object {
       "compressed": true,
-      "size": 181,
+      "size": 179,
     },
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
     Object {
-      "fullhash": "8cdf224bcea94552590b",
+      "fullhash": "18beec7527af02981a38",
       "immutable": true,
       "related": Object {
         "brotliCompressed": "async.async.js.br",
@@ -461,46 +498,46 @@ Array [
         "customed": "async.async.js.custom?foo=bar#hash",
         "gziped": "async.async.js.gz",
       },
-      "size": 269,
+      "size": 265,
     },
   ],
   Array [
     "main.js.br",
-    3587,
+    3563,
     Object {
       "compressed": true,
-      "size": 3587,
+      "size": 3563,
     },
   ],
   Array [
     "main.js.compress",
-    3587,
+    3563,
     Object {
       "compressed": true,
-      "size": 3587,
+      "size": 3563,
     },
   ],
   Array [
     "main.js.custom?foo=bar#hash",
-    3587,
+    3563,
     Object {
       "compressed": true,
-      "size": 3587,
+      "size": 3563,
     },
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
     Object {
       "compressed": true,
-      "size": 3587,
+      "size": 3563,
     },
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
     Object {
-      "fullhash": "8cdf224bcea94552590b",
+      "fullhash": "18beec7527af02981a38",
       "immutable": true,
       "related": Object {
         "brotliCompressed": "main.js.br",
@@ -508,7 +545,7 @@ Array [
         "customed": "main.js.custom?foo=bar#hash",
         "gziped": "main.js.gz",
       },
-      "size": 15315,
+      "size": 15216,
     },
   ],
 ]
@@ -534,19 +571,19 @@ Array [
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
diff --git a/test/__snapshots__/algorithm.test.js.snap.webpack5 b/test/__snapshots__/algorithm.test.js.snap.webpack5
index 3d26f5e..4fd2ff8 100644
--- a/test/__snapshots__/algorithm.test.js.snap.webpack5
+++ b/test/__snapshots__/algorithm.test.js.snap.webpack5
@@ -19,20 +19,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -62,20 +62,20 @@ Array [
     672,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    265,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    15156,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    15057,
   ],
 ]
 `;
@@ -103,12 +103,12 @@ Array [
     672,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
 ]
 `;
diff --git a/test/__snapshots__/cache-option.test.js.snap.webpack4 b/test/__snapshots__/cache-option.test.js.snap.webpack4
index 9586d3f..fcdf7c3 100644
--- a/test/__snapshots__/cache-option.test.js.snap.webpack4
+++ b/test/__snapshots__/cache-option.test.js.snap.webpack4
@@ -151,6 +151,116 @@ exports[`"cache" option matches snapshot for \`other-cache-directory\` value ({S
 
 exports[`"cache" option matches snapshot for \`other-cache-directory\` value ({String}): warnings 2`] = `Array []`;
 
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: 09a1a1112c577c2794359715edfcb5ac.png 1`] = `
+Array [
+  "09a1a1112c577c2794359715edfcb5ac.png",
+  "09a1a1112c577c2794359715edfcb5ac",
+]
+`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: 23fc1d3ac606d117e05a140e0de79806.svg 1`] = `
+Array [
+  "23fc1d3ac606d117e05a140e0de79806.svg",
+  "23fc1d3ac606d117e05a140e0de79806",
+]
+`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png.gz",
+    73160,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js",
+    249,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js.gz",
+    171,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js",
+    11645,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js.gz",
+    3000,
+  ],
+]
+`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: assets 2`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png.gz",
+    73160,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js",
+    249,
+  ],
+  Array [
+    "async.async.dcbdb1dd40763448b635.js.gz",
+    171,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js",
+    11645,
+  ],
+  Array [
+    "main.82c6786e32f9c77b44ef.js.gz",
+    3000,
+  ],
+]
+`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: async.async.dcbdb1dd40763448b635.js 1`] = `
+Array [
+  "async.async.dcbdb1dd40763448b635.js",
+  "0fb94f644e2d45a0d17031ab77459a35",
+]
+`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: errors 1`] = `Array []`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: errors 2`] = `Array []`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: main.82c6786e32f9c77b44ef.js 1`] = `
+Array [
+  "main.82c6786e32f9c77b44ef.js",
+  "ef0eb5cabc4295a2bbcd320c66aecd89",
+]
+`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: warnings 1`] = `Array []`;
+
+exports[`"cache" option matches snapshot for \`other-other-cache-directory\` value ({String}) with the "algorithm" option: warnings 2`] = `Array []`;
+
 exports[`"cache" option matches snapshot for \`true\` value ({Boolean}): 09a1a1112c577c2794359715edfcb5ac.png 1`] = `
 Array [
   "09a1a1112c577c2794359715edfcb5ac.png",
diff --git a/test/__snapshots__/cache-option.test.js.snap.webpack5 b/test/__snapshots__/cache-option.test.js.snap.webpack5
index ab6a3aa..6644931 100644
--- a/test/__snapshots__/cache-option.test.js.snap.webpack5
+++ b/test/__snapshots__/cache-option.test.js.snap.webpack5
@@ -15,20 +15,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -48,20 +48,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -74,6 +74,80 @@ exports[`"cache" option should work when \`cache\` is \`false\`: warnings 1`] =
 
 exports[`"cache" option should work when \`cache\` is \`false\`: warnings 2`] = `Array []`;
 
+exports[`"cache" option should work with "filesystem" value for the "cache.type" option and with the "algorithm" option: assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+  ],
+  Array [
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
+  ],
+  Array [
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
+  ],
+  Array [
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
+  ],
+  Array [
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
+  ],
+]
+`;
+
+exports[`"cache" option should work with "filesystem" value for the "cache.type" option and with the "algorithm" option: assets 2`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg.gz",
+    393,
+  ],
+  Array [
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
+  ],
+  Array [
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
+  ],
+  Array [
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
+  ],
+  Array [
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
+  ],
+]
+`;
+
+exports[`"cache" option should work with "filesystem" value for the "cache.type" option and with the "algorithm" option: errors 1`] = `Array []`;
+
+exports[`"cache" option should work with "filesystem" value for the "cache.type" option and with the "algorithm" option: errors 2`] = `Array []`;
+
+exports[`"cache" option should work with "filesystem" value for the "cache.type" option and with the "algorithm" option: warnings 1`] = `Array []`;
+
+exports[`"cache" option should work with "filesystem" value for the "cache.type" option and with the "algorithm" option: warnings 2`] = `Array []`;
+
 exports[`"cache" option should work with "filesystem" value for the "cache.type" option: assets 1`] = `
 Array [
   Array [
@@ -89,20 +163,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -122,20 +196,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -163,20 +237,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -196,20 +270,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
diff --git a/test/__snapshots__/compressionOptions-option.test.js.snap.webpack5 b/test/__snapshots__/compressionOptions-option.test.js.snap.webpack5
index 118d415..5dc73ea 100644
--- a/test/__snapshots__/compressionOptions-option.test.js.snap.webpack5
+++ b/test/__snapshots__/compressionOptions-option.test.js.snap.webpack5
@@ -19,20 +19,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -60,20 +60,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
diff --git a/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5 b/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5
index b0fe050..0d77233 100644
--- a/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5
+++ b/test/__snapshots__/deleteOriginalAssets.test.js.snap.webpack5
@@ -19,20 +19,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -52,12 +52,12 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
diff --git a/test/__snapshots__/exclude-option.test.js.snap.webpack5 b/test/__snapshots__/exclude-option.test.js.snap.webpack5
index f7fc78a..0c830b9 100644
--- a/test/__snapshots__/exclude-option.test.js.snap.webpack5
+++ b/test/__snapshots__/exclude-option.test.js.snap.webpack5
@@ -16,19 +16,19 @@ Array [
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
@@ -49,19 +49,19 @@ Array [
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
diff --git a/test/__snapshots__/filename-option.test.js.snap.webpack5 b/test/__snapshots__/filename-option.test.js.snap.webpack5
index ab241c0..cfadaa8 100644
--- a/test/__snapshots__/filename-option.test.js.snap.webpack5
+++ b/test/__snapshots__/filename-option.test.js.snap.webpack5
@@ -19,20 +19,20 @@ Array [
     672,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
-    "async.async.super-compressed.gz.js?ver=8cdf224bcea94552590b",
-    181,
+    "async.async.super-compressed.gz.js?ver=18beec7527af02981a38",
+    179,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
   Array [
-    "main.super-compressed.gz.js?var=8cdf224bcea94552590b",
-    3587,
+    "main.super-compressed.gz.js?var=18beec7527af02981a38",
+    3563,
   ],
 ]
 `;
@@ -60,20 +60,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.js.super-compressed.gz?ver=8cdf224bcea94552590b",
-    181,
+    "async.async.js.super-compressed.gz?ver=18beec7527af02981a38",
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
-    "main.js.super-compressed.gz?var=8cdf224bcea94552590b",
-    3587,
+    "main.js.super-compressed.gz?var=18beec7527af02981a38",
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
@@ -101,20 +101,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.js.gz?ver=8cdf224bcea94552590b",
-    181,
+    "async.async.js.gz?ver=18beec7527af02981a38",
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
-    "main.js.gz?var=8cdf224bcea94552590b",
-    3587,
+    "main.js.gz?var=18beec7527af02981a38",
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
diff --git a/test/__snapshots__/include-option.test.js.snap.webpack5 b/test/__snapshots__/include-option.test.js.snap.webpack5
index 019bf95..f443edb 100644
--- a/test/__snapshots__/include-option.test.js.snap.webpack5
+++ b/test/__snapshots__/include-option.test.js.snap.webpack5
@@ -12,19 +12,19 @@ Array [
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
@@ -49,19 +49,19 @@ Array [
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
diff --git a/test/__snapshots__/minRatio-option.test.js.snap.webpack5 b/test/__snapshots__/minRatio-option.test.js.snap.webpack5
index 08a7e39..016ae2d 100644
--- a/test/__snapshots__/minRatio-option.test.js.snap.webpack5
+++ b/test/__snapshots__/minRatio-option.test.js.snap.webpack5
@@ -11,12 +11,12 @@ Array [
     672,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
 ]
 `;
@@ -44,20 +44,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
diff --git a/test/__snapshots__/test-option.test.js.snap.webpack4 b/test/__snapshots__/test-option.test.js.snap.webpack4
index 550f693..e3a81a2 100644
--- a/test/__snapshots__/test-option.test.js.snap.webpack4
+++ b/test/__snapshots__/test-option.test.js.snap.webpack4
@@ -102,3 +102,28 @@ Array [
 exports[`"test" option matches snapshot with empty \`test\` value: errors 1`] = `Array []`;
 
 exports[`"test" option matches snapshot with empty \`test\` value: warnings 1`] = `Array []`;
+
+exports[`"test" option should work when no asset to compress : assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "async.async.js?ver=dc74724f7b13a2de5a20",
+    249,
+  ],
+  Array [
+    "main.js?var=dc74724f7b13a2de5a20",
+    11630,
+  ],
+]
+`;
+
+exports[`"test" option should work when no asset to compress : errors 1`] = `Array []`;
+
+exports[`"test" option should work when no asset to compress : warnings 1`] = `Array []`;
diff --git a/test/__snapshots__/test-option.test.js.snap.webpack5 b/test/__snapshots__/test-option.test.js.snap.webpack5
index 782405a..9444f28 100644
--- a/test/__snapshots__/test-option.test.js.snap.webpack5
+++ b/test/__snapshots__/test-option.test.js.snap.webpack5
@@ -15,12 +15,12 @@ Array [
     672,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
@@ -48,12 +48,12 @@ Array [
     393,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
@@ -82,19 +82,19 @@ Array [
   ],
   Array [
     "async.async.js.gz",
-    181,
+    179,
   ],
   Array [
-    "async.async.js?ver=8cdf224bcea94552590b",
-    269,
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
   ],
   Array [
     "main.js.gz",
-    3587,
+    3563,
   ],
   Array [
-    "main.js?var=8cdf224bcea94552590b",
-    15315,
+    "main.js?var=18beec7527af02981a38",
+    15216,
   ],
 ]
 `;
@@ -102,3 +102,28 @@ Array [
 exports[`"test" option matches snapshot with empty \`test\` value: errors 1`] = `Array []`;
 
 exports[`"test" option matches snapshot with empty \`test\` value: warnings 1`] = `Array []`;
+
+exports[`"test" option should work when no asset to compress : assets 1`] = `
+Array [
+  Array [
+    "09a1a1112c577c2794359715edfcb5ac.png",
+    78117,
+  ],
+  Array [
+    "23fc1d3ac606d117e05a140e0de79806.svg",
+    672,
+  ],
+  Array [
+    "async.async.js?ver=18beec7527af02981a38",
+    265,
+  ],
+  Array [
+    "main.js?var=18beec7527af02981a38",
+    15216,
+  ],
+]
+`;
+
+exports[`"test" option should work when no asset to compress : errors 1`] = `Array []`;
+
+exports[`"test" option should work when no asset to compress : warnings 1`] = `Array []`;
diff --git a/test/__snapshots__/threshold-option.test.js.snap.webpack5 b/test/__snapshots__/threshold-option.test.js.snap.webpack5
index 84434f0..cbdbd40 100644
--- a/test/__snapshots__/threshold-option.test.js.snap.webpack5
+++ b/test/__snapshots__/threshold-option.test.js.snap.webpack5
@@ -19,20 +19,20 @@ Array [
     393,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js.gz",
-    181,
+    "async.async.1c2911c7c819fc826fb7.js.gz",
+    179,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
@@ -56,16 +56,16 @@ Array [
     672,
   ],
   Array [
-    "async.async.81ea6697ed82fa2176bb.js",
-    269,
+    "async.async.1c2911c7c819fc826fb7.js",
+    265,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js",
-    15156,
+    "main.c14d5dcb1534759d1d95.js",
+    15057,
   ],
   Array [
-    "main.f1e836b35a2623bafe34.js.gz",
-    3556,
+    "main.c14d5dcb1534759d1d95.js.gz",
+    3537,
   ],
 ]
 `;
diff --git a/test/cache-option.test.js b/test/cache-option.test.js
index 3acaa2f..a85c87c 100644
--- a/test/cache-option.test.js
+++ b/test/cache-option.test.js
@@ -1,4 +1,5 @@
 import path from 'path';
+import zlib from 'zlib';
 
 import cacache from 'cacache';
 import findCacheDir from 'find-cache-dir';
@@ -18,6 +19,9 @@ import {
 const falseCacheDirectory = findCacheDir({ name: 'false-cache-directory' });
 const cacheDir = findCacheDir({ name: 'compression-webpack-plugin' });
 const otherCacheDir = findCacheDir({ name: 'other-cache-directory' });
+const otherOtherCacheDir = findCacheDir({
+  name: 'other-other-cache-directory',
+});
 const uniqueCacheDirectory = findCacheDir({ name: 'unique-cache-directory' });
 
 if (getCompiler.isWebpack4()) {
@@ -28,12 +32,19 @@ if (getCompiler.isWebpack4()) {
         cacache.rm.all(cacheDir),
         cacache.rm.all(otherCacheDir),
         cacache.rm.all(uniqueCacheDirectory),
+        cacache.rm.all(otherOtherCacheDir),
       ]);
     });
 
-    afterEach(() =>
-      Promise.all([cacache.rm.all(cacheDir), cacache.rm.all(otherCacheDir)])
-    );
+    afterAll(() => {
+      return Promise.all([
+        cacache.rm.all(falseCacheDirectory),
+        cacache.rm.all(cacheDir),
+        cacache.rm.all(otherCacheDir),
+        cacache.rm.all(uniqueCacheDirectory),
+        cacache.rm.all(otherOtherCacheDir),
+      ]);
+    });
 
     it('matches snapshot for `false` value ({Boolean})', async () => {
       const compiler = getCompiler('./entry.js');
@@ -201,6 +212,89 @@ if (getCompiler.isWebpack4()) {
       expect(cacache.get.mock.calls.length).toBe(newCountAssets / 2);
       expect(cacache.put.mock.calls.length).toBe(0);
     });
+
+    it('matches snapshot for `other-other-cache-directory` value ({String}) with the "algorithm" option', async () => {
+      const beforeCacheCompiler = getCompiler('./entry.js');
+
+      new CompressionPlugin({
+        cache: otherOtherCacheDir,
+        minRatio: 1,
+        algorithm: (input, compressionOptions, callback) => {
+          return zlib.gzip(
+            input,
+            { ...compressionOptions, ...{ level: 9 } },
+            (error, buffer) => {
+              callback(error, Uint8Array.from(buffer));
+            }
+          );
+        },
+      }).apply(beforeCacheCompiler);
+
+      cacache.get = jest.fn(cacache.get);
+      cacache.put = jest.fn(cacache.put);
+
+      const stats = await compile(beforeCacheCompiler);
+
+      expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+      expect(getWarnings(stats)).toMatchSnapshot('errors');
+      expect(getErrors(stats)).toMatchSnapshot('warnings');
+
+      const countAssets = Object.keys(stats.compilation.assets).length;
+
+      // Try to found cached files, but we don't have their in cache
+      expect(cacache.get.mock.calls.length).toBe(countAssets / 2);
+      // Put files in cache
+      expect(cacache.put.mock.calls.length).toBe(countAssets / 2);
+
+      const cacheEntriesList = await cacache.ls(otherOtherCacheDir);
+      const cacheKeys = Object.keys(cacheEntriesList);
+
+      // Make sure that we cached files
+      expect(cacheKeys.length).toBe(countAssets / 2);
+
+      cacheKeys.forEach((cacheEntry) => {
+        // eslint-disable-next-line no-new-func
+        const cacheEntryOptions = new Function(
+          `'use strict'\nreturn ${cacheEntry}`
+        )();
+        const basename = path.basename(cacheEntryOptions.assetName);
+
+        expect([basename, cacheEntryOptions.contentHash]).toMatchSnapshot(
+          basename
+        );
+      });
+
+      cacache.get.mockClear();
+      cacache.put.mockClear();
+
+      const afterCacheCompiler = getCompiler('./entry.js');
+
+      new CompressionPlugin({
+        cache: otherOtherCacheDir,
+        minRatio: 1,
+        algorithm: (input, compressionOptions, callback) => {
+          return zlib.gzip(
+            input,
+            { ...compressionOptions, ...{ level: 9 } },
+            (error, buffer) => {
+              callback(error, Uint8Array.from(buffer));
+            }
+          );
+        },
+      }).apply(afterCacheCompiler);
+
+      const newStats = await compile(afterCacheCompiler);
+
+      expect(getAssetsNameAndSize(newStats)).toMatchSnapshot('assets');
+      expect(getWarnings(newStats)).toMatchSnapshot('errors');
+      expect(getErrors(newStats)).toMatchSnapshot('warnings');
+
+      const newCountAssets = Object.keys(newStats.compilation.assets).length;
+
+      // Now we have cached files so we get their and don't put
+      expect(cacache.get.mock.calls.length).toBe(newCountAssets / 2);
+      expect(cacache.put.mock.calls.length).toBe(0);
+    });
   });
 } else {
   describe('"cache" option', () => {
@@ -382,5 +476,75 @@ if (getCompiler.isWebpack4()) {
       expect(getErrors(newStats)).toMatchSnapshot('errors');
       expect(getWarnings(newStats)).toMatchSnapshot('warnings');
     });
+
+    it('should work with "filesystem" value for the "cache.type" option and with the "algorithm" option', async () => {
+      const compiler = getCompiler(
+        './entry.js',
+        {},
+        {
+          cache: {
+            type: 'filesystem',
+            cacheDirectory: fileSystemCacheDirectory,
+          },
+        }
+      );
+
+      new CompressionPlugin({
+        algorithm: (input, compressionOptions, callback) => {
+          return zlib.gzip(
+            input,
+            { ...compressionOptions, ...{ level: 9 } },
+            (error, buffer) => {
+              callback(error, Uint8Array.from(buffer));
+            }
+          );
+        },
+      }).apply(compiler);
+
+      let getCounter = 0;
+
+      compiler.cache.hooks.get.tap(
+        { name: 'TestCache', stage: -100 },
+        (identifier) => {
+          if (identifier.indexOf('CompressionWebpackPlugin') !== -1) {
+            getCounter += 1;
+          }
+        }
+      );
+
+      let storeCounter = 0;
+
+      compiler.cache.hooks.store.tap(
+        { name: 'TestCache', stage: -100 },
+        (identifier) => {
+          if (identifier.indexOf('CompressionWebpackPlugin') !== -1) {
+            storeCounter += 1;
+          }
+        }
+      );
+
+      const stats = await compile(compiler);
+
+      // Get cache for assets
+      expect(getCounter).toBe(4);
+      // Store cached assets
+      expect(storeCounter).toBe(4);
+      expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+      expect(getErrors(stats)).toMatchSnapshot('errors');
+      expect(getWarnings(stats)).toMatchSnapshot('warnings');
+
+      getCounter = 0;
+      storeCounter = 0;
+
+      const newStats = await compile(compiler);
+
+      // Get cache for assets
+      expect(getCounter).toBe(4);
+      // No need to store, we got cached assets
+      expect(storeCounter).toBe(0);
+      expect(getAssetsNameAndSize(newStats)).toMatchSnapshot('assets');
+      expect(getErrors(newStats)).toMatchSnapshot('errors');
+      expect(getWarnings(newStats)).toMatchSnapshot('warnings');
+    });
   });
 }
diff --git a/test/test-option.test.js b/test/test-option.test.js
index d349384..980e92d 100644
--- a/test/test-option.test.js
+++ b/test/test-option.test.js
@@ -65,4 +65,17 @@ describe('"test" option', () => {
     expect(getWarnings(stats)).toMatchSnapshot('errors');
     expect(getErrors(stats)).toMatchSnapshot('warnings');
   });
+
+  it('should work when no asset to compress ', async () => {
+    new CompressionPlugin({
+      test: /\.(unknown)$/i,
+      minRatio: 1,
+    }).apply(compiler);
+
+    const stats = await compile(compiler);
+
+    expect(getAssetsNameAndSize(stats)).toMatchSnapshot('assets');
+    expect(getWarnings(stats)).toMatchSnapshot('errors');
+    expect(getErrors(stats)).toMatchSnapshot('warnings');
+  });
 });