diff --git a/Gemfile.lock b/Gemfile.lock
index 31819a74..cc3ec0f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,7 +49,7 @@ GEM
     language_server-protocol (3.17.0.3)
     method_source (1.1.0)
     minitest (5.24.0)
-    mocha (2.4.0)
+    mocha (2.4.2)
       ruby2_keywords (>= 0.0.5)
     mono_logger (1.1.2)
     multi_json (1.15.0)