diff --git a/Gemfile.lock b/Gemfile.lock
index fb10d5d..aa72c27 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
     newrelic_rpm (3.16.3.323)
     oauth (0.5.1)
     os (0.9.6)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)