diff --git a/Gemfile.lock b/Gemfile.lock
index 29d14dd..779ef8c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     pygments.rb (0.2.12)
       rubypython (~> 0.5.3)
     rack (1.6.4)
-    rake (0.9.2.2)
+    rake (13.0.1)
     rdiscount (1.6.8)
     rspec (2.10.0)
       rspec-core (~> 2.10.0)