diff --git a/Gemfile.lock b/Gemfile.lock
index b94d3ef1..1d5141be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -227,7 +227,7 @@ GEM
       libv8-node (~> 24.12.0.1)
     minitest (5.27.0)
     minitest-stub-const (0.6)
-    mocha (3.0.2)
+    mocha (3.1.0)
       ruby2_keywords (>= 0.0.5)
     mysql2 (0.5.7)
       bigdecimal