diff --git a/Gemfile.lock b/Gemfile.lock
index f4c6b45..822cf87 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -231,7 +231,7 @@ GEM
     public_suffix (2.0.5)
     pygments.rb (1.1.2)
       multi_json (>= 1.0.0)
-    rake (12.0.0)
+    rake (12.3.3)
     rb-fsevent (0.9.8)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)