diff --git a/Gemfile.lock b/Gemfile.lock
index 98af170..3b5a57e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -83,7 +83,7 @@ GEM
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
-    rake (12.0.0)
+    rake (13.0.1)
     rdoc (3.12.2)
       json (~> 1.4)
     ref (2.0.0)