diff --git a/Gemfile.lock b/Gemfile.lock
index 9dd91da9..29620d5e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
       rugged (>= 0.24, < 2.0)
       thor (>= 0.19, < 2.0)
     mini_portile2 (2.8.1)
-    minitest (5.18.0)
+    minitest (5.22.3)
     minitest-hooks (1.5.1)
       minitest (> 5.3)
     mocha (2.1.0)