diff --git a/composer.json b/composer.json
index b54b33d..5998c2f 100644
--- a/composer.json
+++ b/composer.json
@@ -66,6 +66,13 @@
         "require-typo3-version": [
             "@php -r '$conf=json_decode(file_get_contents(__DIR__.\"/composer.json\"),true);$conf[\"require\"][\"typo3/cms-core\"]=$_SERVER[\"argv\"][1];file_put_contents(__DIR__.\"/composer.json\",json_encode($conf,JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT).chr(10));'",
             "@composer install"
+        ],
+        "link-extension": [
+            "@php -r 'is_dir($extFolder=__DIR__.\"/.Build/public/typo3conf/ext/\") || mkdir($extFolder, 0777, true);'",
+            "@php -r 'file_exists($extFolder=__DIR__.\"/.Build/public/typo3conf/ext/tea\") || symlink(__DIR__,$extFolder);'"
+        ],
+        "post-autoload-dump": [
+            "@link-extension"
         ]
     },
     "extra": {