diff --git a/appengine/static_files/sinatra/Gemfile.lock b/appengine/static_files/sinatra/Gemfile.lock
index efe542677..9ffaaa1a3 100644
--- a/appengine/static_files/sinatra/Gemfile.lock
+++ b/appengine/static_files/sinatra/Gemfile.lock
@@ -35,7 +35,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (2.2.14)
+    rack (2.2.22)
     rack-protection (3.1.0)
       rack (~> 2.2, >= 2.2.4)
     rack-test (2.1.0)