diff --git a/Gemfile.lock b/Gemfile.lock
index e5f8a6e..0fef3b0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -206,7 +206,7 @@ GEM
       rest-client (~> 2.0)
       rexml (~> 3.2)
     racc (1.8.1)
-    rack (3.1.16)
+    rack (3.1.18)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)