diff --git a/Gemfile.lock b/Gemfile.lock
index ec89f57..2ce4284 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,8 +49,8 @@ GEM
     pg (0.12.0)
       rake-compiler (~> 0.7)
     polyglot (0.3.3)
-    rack (1.3.5)
-    rack-cache (1.1)
+    rack (1.3.10)
+    rack-cache (1.13.0)
       rack (>= 0.4)
     rack-mount (0.8.3)
       rack (>= 1.0.0)