diff --git a/Gemfile.lock b/Gemfile.lock
index f7f9d7136..ff5d0dc0f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,7 +85,7 @@ GEM
     mini_mime (0.1.4)
     mini_portile2 (2.3.0)
     minitest (5.10.3)
-    mocha (1.3.0)
+    mocha (1.5.0)
       metaclass (~> 0.0.1)
     net-ldap (0.16.0)
     nio4r (2.1.0)