diff --git a/ruby/Gemfile.lock b/ruby/Gemfile.lock
index 779a090..1117fa2 100644
--- a/ruby/Gemfile.lock
+++ b/ruby/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
   specs:
     diff-lcs (1.1.3)
     multi_json (1.3.2)
-    rake (0.9.2)
+    rake (13.0.1)
     redis (2.2.2)
     rspec (2.9.0)
       rspec-core (~> 2.9.0)