diff --git a/Gemfile.lock b/Gemfile.lock
index b1398e59..d610a836 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     ast (2.4.2)
     docile (1.4.0)
-    minitest (5.15.0)
+    minitest (5.16.0)
     parallel (1.22.1)
     parser (3.1.2.0)
       ast (~> 2.4.1)