diff --git a/Gemfile.lock b/Gemfile.lock
index caf14c0..63a02d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     json_pure (1.4.6)
     mocha (0.9.8)
       rake
-    rake (0.8.7)
+    rake (13.0.3)
     rubyforge (2.0.4)
       json_pure (>= 1.1.7)
     thoughtbot-shoulda (2.11.1)