diff --git a/Gemfile.lock b/Gemfile.lock
index 12ec825..a97a7b9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -66,7 +66,7 @@ GEM
     parser (3.1.2.1)
       ast (~> 2.4.1)
     racc (1.6.0)
-    rack (2.2.4)
+    rack (2.2.6.2)
     rack-test (2.0.2)
       rack (>= 1.3)
     rails-dom-testing (2.0.3)