diff --git a/Gemfile.lock b/Gemfile.lock
index af0bd1c8c..dd00be928 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
     memory_profiler (1.1.0)
     method_source (1.1.0)
     minitest (5.26.2)
-    mocha (2.8.0)
+    mocha (3.0.0)
       ruby2_keywords (>= 0.0.5)
     mutex_m (0.3.0)
     mysql2 (0.5.7)