diff --git a/src/Symfony/Component/Security/Http/composer.json b/src/Symfony/Component/Security/Http/composer.json
index ff60e9bf89..31d26aa1a1 100644
--- a/src/Symfony/Component/Security/Http/composer.json
+++ b/src/Symfony/Component/Security/Http/composer.json
@@ -34,6 +34,7 @@
     },
     "conflict": {
         "symfony/event-dispatcher": "<4.3",
+        "symfony/security-bundle": "<5.3",
         "symfony/security-csrf": "<4.4"
     },
     "suggest": {