diff --git a/Gemfile b/Gemfile
index 1c0f97bec..bac886402 100644
--- a/Gemfile
+++ b/Gemfile
@@ -100,4 +100,5 @@ group :test do
   gem 'simplecov', require: false
   gem 'webdrivers'
   gem 'webmock'
+  gem 'minitest', '~> 5.10.0'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 35aa43496..72ccd9ff1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,7 +227,7 @@ GEM
       rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.12.2)
+    minitest (5.10.3)
     monetize (1.9.0)
       money (~> 6.12)
     money (6.12.0)
@@ -452,6 +452,7 @@ DEPENDENCIES
   kaminari (= 0.16.3)
   lhv!
   mina (= 0.3.1)
+  minitest (~> 5.10.0)
   money-rails
   nokogiri
   paper_trail (~> 4.0)