1 files changed, 1 insertions, 0 deletions
diff --git a/Gemfile b/Gemfile
index 18e014e72f..7cb312fbec 100644
--- a/Gemfile
+++ b/Gemfile
@@ -110,6 +110,7 @@ local_gemfile = File.expand_path(".Gemfile", __dir__)
 instance_eval File.read local_gemfile if File.exist? local_gemfile
 
 group :test do
+  gem "minitest", "= 5.11.1"
   gem "minitest-bisect"
 
   platforms :mri do