diff --git a/Gemfile.lock b/Gemfile.lock
index a9787f3..b2434f5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
       stringio
     public_suffix (5.0.5)
     racc (1.8.0)
-    rack (3.1.20)
+    rack (3.1.21)
     rainbow (3.1.1)
     rake (13.2.1)
     rdoc (6.7.0)
diff --git a/vendor/cache/rack-3.1.20.gem b/vendor/cache/rack-3.1.20.gem
deleted file mode 100644
index 0a5a3ef..0000000
Binary files a/vendor/cache/rack-3.1.20.gem and /dev/null differ
diff --git a/vendor/cache/rack-3.1.21.gem b/vendor/cache/rack-3.1.21.gem
new file mode 100644
index 0000000..5382c6f
Binary files /dev/null and b/vendor/cache/rack-3.1.21.gem differ