diff --git a/Gemfile.lock b/Gemfile.lock
index a949acc..36fcd12 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,7 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     pg (1.1.4)
-    rack (2.1.4)
+    rack (2.2.6.4)
     rack-contrib (2.1.0)
       rack (~> 2.0)
     rack-protection (2.0.5)