diff --git a/Gemfile.lock b/Gemfile.lock
index 9721046e3..5b0d8a3f4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
       rails (>= 3.1.0)
     prawn-table (0.2.2)
       prawn (>= 1.3.0, < 3.0.0)
-    rack (1.6.10)
+    rack (1.6.13)
     rack-protection (1.5.5)
       rack
     rack-test (0.6.3)