diff --git a/Gemfile b/Gemfile
index 2aa93bc..9cd5937 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ group :development, :install do
 end
 
 group :development, :test do
-  gem 'minitest', '~> 5.21'
+  gem 'minitest', '~> 5.22'
   gem 'rake', '~> 13.1'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 9c54b49..aa9d9f0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     docopt (0.6.1)
     json (2.7.1)
     language_server-protocol (3.17.0.3)
-    minitest (5.21.2)
+    minitest (5.22.0)
     paint (2.3.0)
     parallel (1.24.0)
     parser (3.3.0.5)
@@ -48,7 +48,7 @@ DEPENDENCIES
   bundler (~> 2.1)
   commonmarker (~> 0.23)
   docopt (~> 0.6)
-  minitest (~> 5.21)
+  minitest (~> 5.22)
   paint (~> 2.3)
   rabid!
   rake (~> 13.1)