diff --git a/Gemfile.lock b/Gemfile.lock
index c1ec855..caf5210 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,7 +64,7 @@ GEM
       stringio
     public_suffix (6.0.1)
     racc (1.8.1)
-    rack (3.1.12)
+    rack (3.1.18)
     rack-protection (4.1.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)