diff --git a/Gemfile b/Gemfile
index 4843673..31f29a5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 gemspec
 
-gem 'minitest', '~> 5.16'
+gem 'minitest', '~> 5.18'
 gem 'minitest-ci', '~> 3.4'
 gem 'minitest-reporters', '~> 1.3'
 gem 'rake', '~> 13.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index dc558c5..266d305 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     builder (3.2.4)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
-    minitest (5.18.0)
+    minitest (5.18.1)
     minitest-ci (3.4.0)
       minitest (>= 5.0.6)
     minitest-reporters (1.6.0)
@@ -61,7 +61,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  minitest (~> 5.16)
+  minitest (~> 5.18)
   minitest-ci (~> 3.4)
   minitest-reporters (~> 1.3)
   rake (~> 13.0)