diff --git a/Gemfile.lock b/Gemfile.lock
index 0649b1f..2931024 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.2.4)
-    rake (10.1.0)
+    rake (13.0.6)
     rspec (2.14.1)
       rspec-core (~> 2.14.0)
       rspec-expectations (~> 2.14.0)