diff --git a/Gemfile.lock b/Gemfile.lock
index a67e908..d17cab2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
     metaclass (0.0.1)
     mocha (0.10.0)
       metaclass (~> 0.0.1)
-    rake (0.9.2)
+    rake (12.3.3)
     rdoc (3.11)
       json (~> 1.4)