diff --git a/Gemfile.lock b/Gemfile.lock
index 4732bcf..75c3c55 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     pygments.rb (0.3.4)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
-    rake (10.0.3)
+    rake (12.3.3)
     sass (3.2.4)
     syntax (1.0.0)
     yajl-ruby (1.1.0)