diff --git a/composer.json b/composer.json
index 2d4d53c..a206286 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,8 @@
         "Fix ArrayObject::unserialize()": "zendframework/zend-stdlib/ArrayObject-unserialize-continue.patch"
       },
       "sunra/php-simple-html-dom-parser:1.5.2": {
-        "Fix minus in regular expressions": "sunra/php-simple-html-dom-parser/minus-in-regular-expressions.patch"
+        "Fix minus in regular expressions": "sunra/php-simple-html-dom-parser/minus-in-regular-expressions.patch",
+        "Add PHP 8.1 compability to league/url version 3.3.5": "sunra/php-simple-html-dom-parser/php8.1-compatibility.patch"
       },
       "phpunit/phpunit:4.8.36": {
         "Avoid each() in Getopt": "phpunit/phpunit/Getopt-each.patch"
@@ -57,6 +58,9 @@
       },
       "lcobucci/jwt:3.4.6": {
         "Adds php 8 compability to jwt version 3.4.6": "lcobucci/jwt/php8-compatibility.patch"
+      },
+      "league/url:3.3.5": {
+        "Add PHP 8.1 compability to league/url version 3.3.5": "league/url/php8.1-compatibility.patch"
       }
     }
   }
diff --git a/league/url/php8.1-compatibility.patch b/league/url/php8.1-compatibility.patch
new file mode 100644
index 0000000..89ec640
--- /dev/null
+++ b/league/url/php8.1-compatibility.patch
@@ -0,0 +1,81 @@
+From: Michele Locati <michele@locati.it>
+Date: Tue, 15 Mar 2022 12:11:04 +0100
+Subject: [PATCH] Fix PHP 8.1 compatibility
+
+
+--- a/src/Components/AbstractArray.php
++++ b/src/Components/AbstractArray.php
+@@ -60,6 +60,7 @@ abstract class AbstractArray implements IteratorAggregate, Countable
+      *
+      * @return ArrayIterator
+      */
++    #[\ReturnTypeWillChange]
+     public function getIterator()
+     {
+         return new ArrayIterator($this->data);
+@@ -72,6 +73,7 @@ abstract class AbstractArray implements IteratorAggregate, Countable
+      *
+      * @return integer
+      */
++    #[\ReturnTypeWillChange]
+     public function count($mode = COUNT_NORMAL)
+     {
+         return count($this->data, $mode);
+@@ -84,6 +86,7 @@ abstract class AbstractArray implements IteratorAggregate, Countable
+      *
+      * @return bool
+      */
++    #[\ReturnTypeWillChange]
+     public function offsetExists($offset)
+     {
+         return isset($this->data[$offset]);
+@@ -94,6 +97,7 @@ abstract class AbstractArray implements IteratorAggregate, Countable
+      *
+      * @param int|string $offset
+      */
++    #[\ReturnTypeWillChange]
+     public function offsetUnset($offset)
+     {
+         unset($this->data[$offset]);
+@@ -106,6 +110,7 @@ abstract class AbstractArray implements IteratorAggregate, Countable
+      *
+      * @return null
+      */
++    #[\ReturnTypeWillChange]
+     public function offsetGet($offset)
+     {
+         if (isset($this->data[$offset])) {
+
+--- a/src/Components/AbstractComponent.php
++++ b/src/Components/AbstractComponent.php
+@@ -64,7 +64,7 @@ abstract class AbstractComponent implements ComponentInterface
+      */
+     public function __toString()
+     {
+-        return str_replace(null, '', $this->get());
++        return (string) $this->get();
+     }
+ 
+     /**
+
+--- a/src/Components/AbstractSegment.php
++++ b/src/Components/AbstractSegment.php
+@@ -115,6 +115,7 @@ abstract class AbstractSegment extends AbstractArray implements ArrayAccess
+      * @param int|string $offset
+      * @param mixed      $value
+      */
++    #[\ReturnTypeWillChange]
+     public function offsetSet($offset, $value)
+     {
+         $data = $this->data;
+
+--- a/src/Components/Query.php
++++ b/src/Components/Query.php
+@@ -133,6 +133,7 @@ class Query extends AbstractArray implements QueryInterface, ArrayAccess
+     /**
+      * {@inheritdoc}
+      */
++    #[\ReturnTypeWillChange]
+     public function offsetSet($offset, $value)
+     {
+         if (is_null($offset)) {
diff --git a/sunra/php-simple-html-dom-parser/php8.1-compatibility.patch b/sunra/php-simple-html-dom-parser/php8.1-compatibility.patch
new file mode 100644
index 0000000..4ad5901
--- /dev/null
+++ b/sunra/php-simple-html-dom-parser/php8.1-compatibility.patch
@@ -0,0 +1,16 @@
+From: Michele Locati <michele@locati.it>
+Date: Tue, 15 Mar 2022 14:28:50 +0100
+Subject: [PATCH] Fix PHP 8.1 compatibility
+
+
+--- a/Src/Sunra/PhpSimple/simplehtmldom_1_5/simple_html_dom.php
++++ b/Src/Sunra/PhpSimple/simplehtmldom_1_5/simple_html_dom.php
+@@ -715,7 +715,7 @@ class simple_html_dom_node
+             if (!empty($m[6])) {$val=$m[6];}
+ 
+             // convert to lowercase
+-            if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower($key);}
++            if ($this->dom->lowercase) {$tag=strtolower($tag); $key=strtolower((string) $key);}
+             //elements that do NOT have the specified attribute
+             if (isset($key[0]) && $key[0]==='!') {$key=substr($key, 1); $no_key=true;}
+