diff --git a/Configuration/TypoScript/setup.typoscript b/Configuration/TypoScript/setup.typoscript
index 5400bbb..ec3a4f4 100644
--- a/Configuration/TypoScript/setup.typoscript
+++ b/Configuration/TypoScript/setup.typoscript
@@ -29,6 +29,7 @@ plugin.tx_powermail {
 }
 
 page.includeJSFooter.powermailextended = EXT:powermailextended/Resources/Public/JavaScripts/ZipValidation.js
+page.includeJSFooter.powermailextended.defer = 1
 
 
 # Add new Field Properties
diff --git a/Resources/Public/JavaScripts/ZipValidation.js b/Resources/Public/JavaScripts/ZipValidation.js
index b0d26d5..1f89831 100755
--- a/Resources/Public/JavaScripts/ZipValidation.js
+++ b/Resources/Public/JavaScripts/ZipValidation.js
@@ -1,11 +1,14 @@
 /**
- * <input type="text" data-parsley-custom100="1" data-parsley-error-message="Please try again" />
+ * <input type="text" data-powermail-custom100="80000" data-powermail-error-message="Please try again" />
  */
-window.Parsley.addValidator(
-	'custom100', function (value, requirement) {
-		if (value >= 80000) {
-			return true;
+const forms = document.querySelectorAll('.powermail_form');
+forms.forEach(function(form) {
+	let formValidation = form.powermailFormValidation;
+
+	formValidation.addValidator('custom100', function(field) {
+		if (field.hasAttribute('data-powermail-custom100')) {
+			return field.value < parseInt(field.getAttribute('data-powermail-custom100'));
 		}
 		return false;
-	}, 32)
-	.addMessage('en', 'custom100', 'Error');
+	});
+});
diff --git a/composer.json b/composer.json
index afbe3d9..062138d 100644
--- a/composer.json
+++ b/composer.json
@@ -15,10 +15,10 @@
     }
   ],
   "type": "typo3-cms-extension",
-  "license": "GPL-3.0",
+  "license": "GPL-2.0-or-later",
   "require": {
-    "typo3/cms": "^10.4",
-    "in2code/powermail": "^8.0"
+    "typo3/cms-core": "^11.5",
+    "in2code/powermail": ">=9.0.0"
   },
   "autoload": {
     "psr-4": {
diff --git a/ext_emconf.php b/ext_emconf.php
index 643499b..4915eb7 100755
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -5,15 +5,15 @@
     'description' => 'Sample Extension to extend powermail: 
         Add new validators, Add new Fieldtypes or Add new Field Properties',
     'category' => 'plugin',
-    'version' => '4.0.0',
+    'version' => '5.0.0',
     'state' => 'beta',
     'author' => 'Powermail dev team',
     'author_email' => 'alexander.kellner@in2code.de',
     'author_company' => 'in2code.de',
     'constraints' => [
         'depends' => [
-            'typo3' => '10.4.0-10.99.99',
-            'powermail' => '8.0.0-8.99.99',
+            'typo3' => '11.5.0-11.5.99',
+            'powermail' => '9.0.0-0.0.0',
         ],
         'conflicts' => [],
         'suggests' => [],