diff --git a/Gemfile.lock b/Gemfile.lock
index d862b1e..e0d1773 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     gemcutter (0.7.0)
     json_pure (1.6.1)
     rack (1.3.3)
-    rake (0.9.2)
+    rake (13.0.1)
     rdoc (3.9.4)
     rubyforge (2.0.4)
       json_pure (>= 1.1.7)