diff --git a/ruby_event_store-browser/Gemfile.lock b/ruby_event_store-browser/Gemfile.lock
index 38b5aa5a95..5dd47246cf 100644
--- a/ruby_event_store-browser/Gemfile.lock
+++ b/ruby_event_store-browser/Gemfile.lock
@@ -74,7 +74,7 @@ GEM
       racc
     public_suffix (5.0.3)
     racc (1.7.3)
-    rack (3.0.8)
+    rack (3.0.9.1)
     rack-test (2.1.0)
       rack (>= 1.3)
     rackup (2.1.0)