diff --git a/Gemfile.lock b/Gemfile.lock
index 34b7d36a5..b2c5abecd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -310,7 +310,7 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.7)
     minitest (5.25.1)
-    mocha (2.4.5)
+    mocha (2.5.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.3)
     multi_json (1.15.0)