diff --git a/Gemfile.lock b/Gemfile.lock
index 5a10b6f..4198198 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,7 @@ GEM
       rack (>= 1.0.0)
     rack-test (0.5.7)
       rack (>= 1.0)
-    rake (0.8.7)
+    rake (13.0.1)
     rspec (2.5.0)
       rspec-core (~> 2.5.0)
       rspec-expectations (~> 2.5.0)