diff --git a/Gemfile.lock b/Gemfile.lock
index 2df2987..ac018fd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,7 +28,7 @@ GEM
       concurrent-ruby (~> 1.0)
     multi_json (1.12.2)
     multi_test (0.1.2)
-    rake (12.3.0)
+    rake (12.3.1)
     rspec-expectations (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)