diff --git a/Gemfile.lock b/Gemfile.lock
index 8071e3e..d539d14 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -162,7 +162,7 @@ GEM
       date
       stringio
     racc (1.8.1)
-    rack (3.1.15)
+    rack (3.1.18)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)