diff --git a/Gemfile.lock b/Gemfile.lock
index 1eac6a9..7ff08d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
   remote: http://rubygems.org/
   specs:
     diff-lcs (1.1.2)
-    rake (0.8.7)
+    rake (13.0.1)
     rspec (2.6.0)
       rspec-core (~> 2.6.0)
       rspec-expectations (~> 2.6.0)