diff --git a/Gemfile.lock b/Gemfile.lock
index e0a2f56..1bb8ee5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (2.0.1)
+    rack (2.2.6.4)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails-dom-testing (2.0.2)