diff --git a/Gemfile.lock b/Gemfile.lock
index e67a348..821b904 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
       builder
       minitest (>= 5.0)
       ruby-progressbar
-    mocha (2.2.0)
+    mocha (2.4.1)
       ruby2_keywords (>= 0.0.5)
     parallel (1.24.0)
     parser (3.3.1.0)