diff --git a/Gemfile.lock b/Gemfile.lock
index 3d8f204..7f5fb20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
       rake
       rdoc
     json (1.7.7)
-    rake (10.0.3)
+    rake (13.0.1)
     rdoc (3.12.1)
       json (~> 1.4)
     rspec (3.4.0)