diff --git a/Gemfile.lock b/Gemfile.lock
index 579b240ab2c..eae3c9dae0b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -256,7 +256,7 @@ GEM
       ffi (~> 1.9)
     minio_runner (0.1.2)
     minitest (5.25.2)
-    mocha (2.5.0)
+    mocha (2.6.0)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.5)
     multi_json (1.15.0)