diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 60b61ffa..2b74267f 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -106,7 +106,7 @@ GEM
     public_suffix (4.0.1)
     puma (4.3.3)
       nio4r (~> 2.0)
-    rack (2.0.8)
+    rack (2.2.2)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-test (1.1.0)