diff --git a/Gemfile b/Gemfile
index 5d75457870c..af6e43d1732 100644
--- a/Gemfile
+++ b/Gemfile
@@ -108,7 +108,6 @@ local_gemfile = File.expand_path(".Gemfile", __dir__)
 instance_eval File.read local_gemfile if File.exist? local_gemfile
 
 group :test do
-  gem "minitest", "~> 5.10.0"
   gem "minitest-bisect"
 
   platforms :mri do
diff --git a/Gemfile.lock b/Gemfile.lock
index 21328870d4b..2869179e4c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -306,7 +306,7 @@ GEM
     mini_magick (4.8.0)
     mini_mime (0.1.4)
     mini_portile2 (2.3.0)
-    minitest (5.10.3)
+    minitest (5.11.1)
     minitest-bisect (1.4.0)
       minitest-server (~> 1.0)
       path_expander (~> 1.0)
@@ -522,7 +522,6 @@ DEPENDENCIES
   libxml-ruby
   listen (>= 3.0.5, < 3.2)
   mini_magick
-  minitest (~> 5.10.0)
   minitest-bisect
   mocha
   mysql2 (>= 0.4.4)