diff --git a/composer.json b/composer.json
index f41bd3d..4a70c5c 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
         "lcobucci/clock": "^3.0",
         "phpstan/phpstan": "^2.0",
         "phpunit/phpunit": "^13.0",
-        "symfony/serializer": "^6.0|^7.0|^8.0",
+        "symfony/serializer": "^8.0.8",
         "twig/twig": "^3.0",
         "roave/backward-compatibility-check": "^8.2"
     },