diff --git a/Gemfile.lock b/Gemfile.lock
index 1ba9dbc82..c616763a5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
     docile (1.4.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
-    minitest (5.15.0)
+    minitest (5.20.0)
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)