diff --git a/Gemfile.lock b/Gemfile.lock
index 022769e..10e8c15 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,7 +40,7 @@ GEM
       rack (>= 1.0.0)
     rack-test (0.5.7)
       rack (>= 1.0)
-    rake (0.8.7)
+    rake (13.0.1)
     rspec (2.3.0)
       rspec-core (~> 2.3.0)
       rspec-expectations (~> 2.3.0)