diff --git a/web/Gemfile.lock b/web/Gemfile.lock
index 34a940e..cb6d318 100644
--- a/web/Gemfile.lock
+++ b/web/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     multi_json (1.11.2)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.3)