diff --git a/Gemfile.lock b/Gemfile.lock
index 182491b..761dbe8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     power_assert (0.2.6)
-    rake (0.9.2.2)
+    rake (12.3.3)
     safe_yaml (1.0.4)
     test-unit (3.1.5)
       power_assert