diff --git a/composer.json b/composer.json
index d01f117..8f584d0 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     }
   ],
   "require": {
-    "typo3/cms-core": "^10.4 || ^11.5"
+    "typo3/cms-core": "^10.4 || ^11.5 || ^12.0"
   },
   "extra": {
     "typo3/cms": {
diff --git a/ext_emconf.php b/ext_emconf.php
index 5291b5b..590750b 100755
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -10,7 +10,7 @@
     'version' => '0.0.1',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.5.0-11.5.99',
+            'typo3' => '10.5.0-12.4.99',
         ],
         'conflicts' => [
         ],