diff --git a/Gemfile.lock b/Gemfile.lock
index 46ace4e..f907f47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
       multi_json
     multi_json (1.11.0)
     multipart-post (2.0.0)
-    rack (1.6.1)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rainbows (4.6.2)