diff --git a/Gemfile.lock b/Gemfile.lock
index d802953..c926bda 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
       rake
       rdoc
     json (1.7.3)
-    rake (0.9.2.2)
+    rake (13.0.1)
     rdoc (3.12)
       json (~> 1.4)
     yamler (0.1.0)