diff --git a/Gemfile.lock b/Gemfile.lock
index 697b359389a..201a1b3f784 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -412,7 +412,7 @@ GEM
     mini_magick (4.12.0)
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
-    minitest (5.19.0)
+    minitest (5.20.0)
     minitest-fail-fast (0.1.0)
       minitest (~> 5)
     minitest-stub-const (0.6)