diff --git a/Gemfile.lock b/Gemfile.lock
index d16d69a..dd212f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     pygments.rb (0.5.2)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
-    rake (10.1.0)
+    rake (12.3.3)
     redcarpet (2.2.2)
     safe_yaml (0.7.1)
     syntax (1.0.0)