diff --git a/Gemfile.lock b/Gemfile.lock
index 36b137e..d6db4f6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
       rdoc
     json (1.6.5)
     nokogiri (1.5.2)
-    rake (0.9.2.2)
+    rake (13.0.1)
     rdoc (3.12)
       json (~> 1.4)
     rspec (2.6.0)