diff --git a/Gemfile b/Gemfile
index 68663ac61..971e576ea 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,7 +25,7 @@ gem 'glogin', '0.14.2'
 gem 'haml', '6.3.0'
 gem 'iri', '0.8.0'
 gem 'loog', '0.5.1'
-gem 'minitest', '5.22.2', require: false
+gem 'minitest', '5.24.1', require: false
 gem 'pgtk', '0.9.3'
 gem 'rack', '3.0.9.1'
 gem 'rack-ssl', '1.4.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index ccf9bfe54..d5b82fb70 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -99,7 +99,7 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
     loog (0.5.1)
-    minitest (5.22.2)
+    minitest (5.24.1)
     multi_json (1.15.0)
     multipart-post (2.4.0)
     mustermann (3.0.0)
@@ -274,7 +274,7 @@ DEPENDENCIES
   haml (= 6.3.0)
   iri (= 0.8.0)
   loog (= 0.5.1)
-  minitest (= 5.22.2)
+  minitest (= 5.24.1)
   pgtk (= 0.9.3)
   rack (= 3.0.9.1)
   rack-ssl (= 1.4.1)