diff --git a/demo/Gemfile.lock b/demo/Gemfile.lock
index 9503fd4..057672f 100644
--- a/demo/Gemfile.lock
+++ b/demo/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     puma (6.6.0)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (3.1.14)
+    rack (3.1.18)
     rack-test (2.2.0)
       rack (>= 1.3)
     rackup (2.2.1)