diff --git a/Gemfile.lock b/Gemfile.lock
index 61369fb..c906fba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
     method_source (1.0.0)
     mini_portile2 (2.8.5)
     minitest (5.22.3)
-    mocha (2.1.0)
+    mocha (2.2.0)
       ruby2_keywords (>= 0.0.5)
     mutex_m (0.2.0)
     rake (13.1.0)