diff --git a/Gemfile.lock b/Gemfile.lock
index 729bad2..7c44a5d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -198,7 +198,7 @@ GEM
     puma (6.4.3)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (3.1.20)
+    rack (3.1.21)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)