diff --git a/Gemfile.lock b/Gemfile.lock
index 622801beb..ec3ae5032 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -180,7 +180,7 @@ GEM
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
-    mocha (1.3.0)
+    mocha (1.4.0)
       metaclass (~> 0.0.1)
     money (6.10.1)
       i18n (>= 0.6.4, < 1.0)