diff --git a/Gemfile.lock b/Gemfile.lock
index 7299398..1bb7d63 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rake (10.4.2)
+    rake (12.3.3)
     rspec (3.2.0)
       rspec-core (~> 3.2.0)
       rspec-expectations (~> 3.2.0)