diff --git a/Gemfile.lock b/Gemfile.lock
index fc71435..a8ece44 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
     kgio (2.6.0)
     rack (1.3.2)
     raindrops (0.7.0)
-    rake (0.9.2)
+    rake (13.0.1)
     rcov (0.9.10)
     rspec (2.6.0)
       rspec-core (~> 2.6.0)