diff --git a/Gemfile.lock b/Gemfile.lock
index caa455190..1c1a79f79 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -209,7 +209,7 @@ GEM
       capybara
       minitest (~> 5.0)
       rake
-    mocha (2.6.1)
+    mocha (2.7.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)
     net-imap (0.5.1)