diff --git a/Gemfile.lock b/Gemfile.lock
index d0505d5b5..f3feee4e6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -261,7 +261,7 @@ GEM
     mini_magick (4.11.0)
     mini_mime (1.1.5)
     mini_portile2 (2.8.4)
-    minitest (5.19.0)
+    minitest (5.20.0)
     money (6.16.0)
       i18n (>= 0.6.4, <= 2)
     msgpack (1.6.0)