1 files changed, 4 insertions, 0 deletions

diff --git a/Gemfile b/Gemfile
index b4e2a20..9c886f6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,7 @@
 source "https://rubygems.org"
 
 gemspec
+
+group :development do
+  gem 'minitest', '~> 5.8', '>= 5.8.4'
+end