diff --git a/src/Symfony/Component/Security/composer.json b/src/Symfony/Component/Security/composer.json
index 5cd3193d4ce8..76b4fa21e622 100644
--- a/src/Symfony/Component/Security/composer.json
+++ b/src/Symfony/Component/Security/composer.json
@@ -20,6 +20,7 @@
         "symfony/event-dispatcher-contracts": "^1.1|^2",
         "symfony/http-foundation": "^3.4.40|^4.4.7|^5.0.7",
         "symfony/http-kernel": "^4.4",
+        "symfony/polyfill-php80": "^1.15",
         "symfony/property-access": "^3.4|^4.0|^5.0",
         "symfony/service-contracts": "^1.1|^2"
     },