diff --git a/Gemfile.lock b/Gemfile.lock
index 6dc190d..dbef0bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
       multi_json (~> 1.3)
       omniauth-oauth (~> 1.0)
     pg (0.17.1)
-    rack (1.6.10)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.9)