diff --git a/Gemfile.lock b/Gemfile.lock
index 6a09ed601..a4fdc7b8a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -283,7 +283,7 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
     minitest (5.22.3)
-    mocha (2.1.0)
+    mocha (2.2.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)
     multi_test (1.1.0)