diff --git a/Gemfile.lock b/Gemfile.lock
index 9164182..1b7f647 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -169,7 +169,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (6.0.1)
     racc (1.8.1)
-    rack (3.1.7)
+    rack (3.1.21)
     rack-test (2.1.0)
       rack (>= 1.3)
     rackup (2.1.0)