diff --git a/Gemfile.lock b/Gemfile.lock
index 9e3bbc1..478c666 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
       stringio
     public_suffix (6.0.0)
     racc (1.8.1)
-    rack (3.1.18)
+    rack (3.1.20)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)