diff --git a/Gemfile.lock b/Gemfile.lock
index 0e94c96e..3f57ebfd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -353,7 +353,7 @@ GEM
     minitest (6.0.6)
       drb (~> 2.0)
       prism (~> 1.5)
-    mocha (2.7.1)
+    mocha (3.1.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.8.0)
     multi_xml (0.9.1)