diff --git a/Gemfile.lock b/Gemfile.lock
index f7ec29b..6f4903b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
       git (>= 1.2.5)
       rake
     multi_json (1.0.4)
-    rake (0.9.2)
+    rake (13.0.1)
     rcov (0.9.9)
     rspec (2.8.0)
       rspec-core (~> 2.8.0)