diff --git a/Gemfile.lock b/Gemfile.lock
index df9011e..290b1ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -210,7 +210,7 @@ GEM
     minitest-spec-rails (7.4.1)
       minitest (>= 5.0)
       railties (>= 4.1)
-    mocha (2.5.0)
+    mocha (2.6.1)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)
     net-imap (0.5.0)