diff --git a/appengine/standard/migration/memorystore/requirements.txt b/appengine/standard/migration/memorystore/requirements.txt
index 1622fc4aa41..3db99feef72 100644
--- a/appengine/standard/migration/memorystore/requirements.txt
+++ b/appengine/standard/migration/memorystore/requirements.txt
@@ -1,3 +1,4 @@
-redis==3.5.3
+redis==4.0.0; python_version > '3.0'
+redis==3.5.3; python_version < '3.0'
 Flask==1.1.4; python_version < '3.0'
 Flask==2.0.0; python_version > '3.0'
diff --git a/appengine/standard_python3/redis/requirements.txt b/appengine/standard_python3/redis/requirements.txt
index 2205381da82..56e81b0b35b 100644
--- a/appengine/standard_python3/redis/requirements.txt
+++ b/appengine/standard_python3/redis/requirements.txt
@@ -1,2 +1,2 @@
 Flask==2.0.1
-redis==3.5.3
+redis==4.0.0
diff --git a/functions/memorystore/redis/requirements.txt b/functions/memorystore/redis/requirements.txt
index 3fc06321056..372cfa39918 100644
--- a/functions/memorystore/redis/requirements.txt
+++ b/functions/memorystore/redis/requirements.txt
@@ -1 +1 @@
-redis==3.5.3
+redis==4.0.0
diff --git a/memorystore/redis/requirements.txt b/memorystore/redis/requirements.txt
index 87be7e0ecc1..b2141afbdb5 100644
--- a/memorystore/redis/requirements.txt
+++ b/memorystore/redis/requirements.txt
@@ -13,5 +13,5 @@
 # [START memorystore_requirements]
 Flask==2.0.1
 gunicorn==20.1.0
-redis==3.5.3
+redis==4.0.0
 # [END memorystore_requirements]