diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 9c77271..c70caeb 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
     public_suffix (4.0.3)
     puma (4.3.1)
       nio4r (~> 2.0)
-    rack (2.1.2)
+    rack (2.2.6.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-proxy (0.6.5)