diff --git a/Gemfile.lock b/Gemfile.lock
index b114915..0eb05e3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
       activesupport (= 4.2.3)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.4.2)
+    rake (13.0.1)
     rdoc (4.2.0)
     sdoc (0.4.1)
       json (~> 1.7, >= 1.7.7)