diff --git a/src/Notify/composer.json b/src/Notify/composer.json
index 65c5b836be3..5a5dd48c01c 100644
--- a/src/Notify/composer.json
+++ b/src/Notify/composer.json
@@ -32,7 +32,7 @@
         "symfony/config": "^5.4|^6.0|^7.0|^8.0",
         "symfony/dependency-injection": "^5.4|^6.0|^7.0|^8.0",
         "symfony/http-kernel": "^5.4|^6.0|^7.0|^8.0",
-        "symfony/mercure-bundle": "^0.3.4",
+        "symfony/mercure-bundle": "^0.3.4|^0.4",
         "symfony/mercure-notifier": "^5.4|^6.0|^7.0|^8.0",
         "symfony/stimulus-bundle": "^2.9.1",
         "symfony/twig-bundle": "^5.4|^6.0|^7.0|^8.0"