diff --git a/Gemfile.lock b/Gemfile.lock
index 46b50fa..138b0fb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
     base64 (0.2.0)
     bigdecimal (3.1.8)
     byebug (11.1.3)
-    concurrent-ruby (1.3.1)
+    concurrent-ruby (1.3.3)
     connection_pool (2.4.1)
     drb (2.2.1)
     globalid (1.2.1)
@@ -38,7 +38,7 @@ GEM
     method_source (1.1.0)
     mini_portile2 (2.8.7)
     minitest (5.23.1)
-    mocha (2.3.0)
+    mocha (2.4.0)
       ruby2_keywords (>= 0.0.5)
     mutex_m (0.2.0)
     rake (13.2.1)