diff --git a/Gemfile.lock b/Gemfile.lock
index edb784d..56cc03d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     json (1.8.3)
     minitest (5.8.0)
-    rake (10.2.2)
+    rake (12.3.3)
     rdoc (4.1.1)
       json (~> 1.4)