diff --git a/Classes/CacheManager.php b/Classes/CacheManager.php
index 89fa65d..fa4162c 100644
--- a/Classes/CacheManager.php
+++ b/Classes/CacheManager.php
@@ -2,6 +2,7 @@
 
 namespace Macopedia\CachePurger;
 
+use CurlHandle;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerAwareTrait;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
@@ -14,14 +15,12 @@
 use function curl_getinfo;
 use function curl_init;
 use function curl_multi_add_handle;
-use function curl_multi_close;
 use function curl_multi_exec;
 use function curl_multi_init;
 use function curl_multi_remove_handle;
 use function curl_multi_select;
 use function curl_setopt;
 use function is_array;
-use function is_resource;
 use const CURLM_CALL_MULTI_PERFORM;
 use const CURLM_OK;
 use const CURLOPT_CUSTOMREQUEST;
@@ -71,14 +70,10 @@ public function execute(): void
 
         $multiHandle = curl_multi_init();
 
-        if (!is_resource($multiHandle)) {
-            return;
-        }
-
         foreach ($this->settings['varnish.'] as $varnishInstance) {
             foreach ($this->clearQueue as $tag) {
                 $ch = $this->getCurlHandleForCacheClearingAsTag($tag, $varnishInstance);
-                if (!is_resource($ch)) {
+                if (!$ch) {
                     continue;
                 }
                 $curlHandles[] = $ch;
@@ -87,7 +82,6 @@ public function execute(): void
         }
 
         if (count($curlHandles) === 0) {
-            curl_multi_close($multiHandle);
             return;
         }
 
@@ -113,10 +107,6 @@ public function execute(): void
         }
 
         foreach ($curlHandles as $ch) {
-            if (!is_resource($ch)) {
-                continue;
-            }
-
             if (curl_errno($ch) !== 0) {
                 $this->logger->error('error: ' . curl_error($ch));
             } else {
@@ -127,8 +117,6 @@ public function execute(): void
             curl_close($ch);
         }
 
-        curl_multi_close($multiHandle);
-
         $this->clearQueue = [];
     }
 
@@ -162,7 +150,7 @@ public function clearCache(?string $cmd): void
     /**
      * @param string $tag
      * @param string $varnishUrl
-     * @return false|resource
+     * @return false|CurlHandle
      */
     protected function getCurlHandleForCacheClearingAsTag(string $tag, string $varnishUrl)
     {
@@ -172,7 +160,7 @@ protected function getCurlHandleForCacheClearingAsTag(string $tag, string $varni
     /**
      * @param string $varnishUrl
      * @param string $header
-     * @return false|resource
+     * @return false|CurlHandle
      */
     protected function createCurlHandle(string $varnishUrl, string $header, string $method = 'BAN')
     {
diff --git a/README.md b/README.md
index d43df9a..91f6a81 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
-# CachePurger for Varnish 
+# CachePurger for Varnish
 
 - supports clear per page or all pages
-- supports TYPO3 9.5-10.4
-- requires php >= 7.4
+- supports TYPO3 >= 11.5
+- requires php >= 8.1
 
 # Example configuration in Typoscript
 ```
diff --git a/composer.json b/composer.json
index 74163c6..41e266c 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,7 @@
   "license": ["GPL-2.0+"],
   "keywords": ["TYPO3 CMS", "Purge"],
   "require": {
-    "typo3/cms-core": "^9.5 || ^10.4 || ^11.5"
+    "typo3/cms-core": "^11.5"
   },
   "autoload": {
     "psr-4": {
diff --git a/ext_emconf.php b/ext_emconf.php
index 03a8596..6f51999 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -4,12 +4,12 @@
     'title' => 'Cache Purger',
     'description' => 'Purge cached URLs within Varnish instances',
     'category' => 'misc',
-    'version' => '1.0.5',
+    'version' => '2.0.0',
     'state' => 'stable',
     'clearCacheOnLoad' => 0,
     'constraints' => [
         'depends' => [
-            'typo3' => '9.5.0-11.5.99',
+            'typo3' => '11.5.0-11.5.99',
         ],
         'conflicts' => [],
         'suggests' => [],