diff --git a/Gemfile.lock b/Gemfile.lock
index 198f866..dd56518 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,7 +47,7 @@ GEM
       websocket-driver (>= 0.2.0)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rainbow (3.0.0)