diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fcd5db..7aa1a6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 ## x.y.z
 
 ### Added
+- Add support for TYPO3 v12 (#637)
 
 ### Changed
 - Upgrade to the testing framework v7 (#629)
diff --git a/composer.json b/composer.json
index 55b70ac..c83c27e 100644
--- a/composer.json
+++ b/composer.json
@@ -29,10 +29,10 @@
 	"require": {
 		"php": "~7.4.0 || ~8.0.0 || ~8.1.0",
 		"psr/http-message": "^1.0.1",
-		"typo3/cms-core": "^11.5.2",
-		"typo3/cms-extbase": "^11.5.2",
-		"typo3/cms-fluid": "^11.5.2",
-		"typo3/cms-frontend": "^11.5.2"
+		"typo3/cms-core": "^11.5.2 || ^12.0",
+		"typo3/cms-extbase": "^11.5.2 || ^12.0",
+		"typo3/cms-fluid": "^11.5.2 || ^12.0",
+		"typo3/cms-frontend": "^11.5.2 || ^12.0"
 	},
 	"require-dev": {
 		"doctrine/dbal": "^2.13.8 || ^3.3.7",
@@ -53,7 +53,7 @@
 		"seld/jsonlint": "^1.9.0",
 		"squizlabs/php_codesniffer": "^3.7.1",
 		"symfony/yaml": "^5.4 || ^6.1",
-		"typo3/cms-fluid-styled-content": "^11.5.2",
+		"typo3/cms-fluid-styled-content": "^11.5.2 || ^12.0",
 		"typo3/coding-standards": "^0.5.5",
 		"typo3/testing-framework": "^7.0@dev"
 	},
diff --git a/ext_emconf.php b/ext_emconf.php
index ddf4966..15d689c 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -8,10 +8,10 @@ $EM_CONF[$_EXTKEY] = [
     'constraints' => [
         'depends' => [
             'php' => '7.4.0-8.1.99',
-            'typo3' => '11.5.2-11.5.99',
-            'extbase' => '11.5.2-11.5.99',
-            'fluid' => '11.5.2-11.5.99',
-            'frontend' => '11.5.2-11.5.99',
+            'typo3' => '11.5.2-12.4.99',
+            'extbase' => '11.5.2-12.4.99',
+            'fluid' => '11.5.2-12.4.99',
+            'frontend' => '11.5.2-12.4.99',
         ],
     ],
     'state' => 'stable',