diff --git a/composer.json b/composer.json
index 8062f33..1889f25 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
 		}],
 
 	"require": {
-		"typo3/cms-core": ">=9.0.0 <=9.0.99"
+		"typo3/cms-core": "9.0.0"
 	},
 	"conflict": {
 		"typo3/cms": "*"