diff --git a/Gemfile.lock b/Gemfile.lock
index 91c10d9..8356880 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.1)
-    rack (1.6.8)
+    rack (1.6.12)
     rack-jekyll (0.5.0)
       jekyll (>= 1.3)
       listen (>= 1.3)