diff --git a/src/Client.php b/src/Client.php
index 0a84d7b..9fbf731 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -41,7 +41,7 @@ class Client
 
     /**
      * Sets a request header for the cURL request.
-     * 
+     *
      * @param string $name The name of the header. Must not be empty.
      * @param string $value The value of the header. Must not be empty.
      */
@@ -60,7 +60,7 @@ private function setRequestHeader($name, $value)
 
     /**
      * Returns the request headers as an array of strings formatted as "Name: Value".
-     * 
+     *
      * @return array<string> An array of request headers formatted as "Name: Value".
      */
     private function getRequestHeaders()
@@ -122,7 +122,7 @@ public function startSolicitation($order)
         $this->setRequestHeader(self::HEADER_SEQURA_MERCHANT_ID, $order['merchant']['id'] ?? '');
         $this->verbThePayload('POST', array('order' => $order));
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function qualifyForSolicitation($order)
@@ -139,11 +139,11 @@ public function qualifyForSolicitation($order)
 
     /**
      * Retrieves the identification form for a given URI and options.
-     * 
+     *
      * @param string $uri The URI to retrieve the identification form from.
      * @param array $options An associative array of options for the form.
      * @param string $merchant_id The merchant ID to be used in the request.
-     * 
+     *
      * @return string The HTML content of the identification form.
      */
     public function getIdentificationForm($uri, $options = array(), $merchant_id = '')
@@ -158,7 +158,7 @@ public function getIdentificationForm($uri, $options = array(), $merchant_id = '
 
         $this->sendRequest();
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
         return $this->curl_result;
     }
 
@@ -171,7 +171,7 @@ public function sendIdentificationForm($uri, $options = array(), $merchant_id =
         $this->setRequestHeader(self::HEADER_SEQURA_MERCHANT_ID, $merchant_id);
         $this->verbThePayload('POST', $options);
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
         return $this->curl_result;
     }
 
@@ -185,7 +185,7 @@ public function startCards($order)
         $this->setRequestHeader(self::HEADER_SEQURA_MERCHANT_ID, $order['merchant']['id'] ?? '');
         $this->verbThePayload('POST', array('order' => $order));
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function getCardsForm($uri, $options = array(), $merchant_id = '')
@@ -198,7 +198,7 @@ public function getCardsForm($uri, $options = array(), $merchant_id = '')
 
         $this->sendRequest();
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function qualifyForstartCards($order)
@@ -230,7 +230,7 @@ public function getPaymentMethods($uri, $options = array(), $merchant_id = '')
         curl_setopt($this->ch, CURLOPT_CUSTOMREQUEST, 'GET');
         $this->sendRequest();
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function getAvailableDisbursements($merchant_id)
@@ -243,7 +243,7 @@ public function getAvailableDisbursements($merchant_id)
 
         $this->sendRequest();
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function getDisbursementDetails($path)
@@ -259,7 +259,7 @@ public function getDisbursementDetails($path)
 
         $this->sendRequest();
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function getCreditAgreements($amount, $merchant_id, $locale = 'es-ES', $country = 'ES', $currency = 'EUR')
@@ -277,7 +277,7 @@ public function getCreditAgreements($amount, $merchant_id, $locale = 'es-ES', $c
         curl_setopt($this->ch, CURLOPT_CUSTOMREQUEST, 'GET');
         $this->sendRequest();
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function updateOrder($uri, $order, $verb = 'PUT')
@@ -292,7 +292,7 @@ public function updateOrder($uri, $order, $verb = 'PUT')
         if ($this->status == 409) {
             $this->cart_has_changed = true;
         }
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function sendDeliveryReport($delivery_report)
@@ -301,7 +301,7 @@ public function sendDeliveryReport($delivery_report)
         $this->setRequestHeader(self::HEADER_SEQURA_MERCHANT_ID, $delivery_report['merchant']['id'] ?? '');
         $this->verbThePayload('POST', array('delivery_report' => $delivery_report));
         $this->dealWithResponse();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function orderUpdate($order)
@@ -316,7 +316,7 @@ public function orderUpdate($order)
         if ($this->status == 409) {
             $this->cart_has_changed = true;
         }
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function callCron($cron_url)
@@ -326,7 +326,7 @@ public function callCron($cron_url)
         curl_setopt($this->ch, CURLOPT_HTTPGET, 1);
         curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, false);
         $this->sendRequest();
-        curl_close($this->ch);
+        $this->closeCurlHandle();
     }
 
     public function succeeded()
@@ -375,9 +375,24 @@ public function dump()
 
     // Private methods below
 
+    /**
+     * Releases the cURL handle after a request.
+     * On PHP < 8.0 the resource must be explicitly closed; on PHP 8.0+ the
+     * CurlHandle object is reference-counted, so we simply null the property
+     * to let it be garbage-collected and avoid the curl_close() deprecation
+     * introduced in PHP 8.5.
+     */
+    private function closeCurlHandle()
+    {
+        if (PHP_VERSION_ID < 80000) {
+            curl_close($this->ch);
+        }
+        $this->ch = null;
+    }
+
     /**
      * Initializes the cURL session with the given URL and sets the necessary options.
-     * 
+     *
      * @param string $url The URL to initialize the cURL session with.
      */
     private function initCurl($url)
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index d8885cf..460d689 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -80,6 +80,29 @@ public function testGetPaymentMethods(): void
         );
     }
 
+    public function testNoCurlCloseDeprecationOnPhp85Plus(): void
+    {
+        if (PHP_VERSION_ID < 80500) {
+            $this->markTestSkipped('curl_close() deprecation notices only apply to PHP 8.5+');
+        }
+
+        set_error_handler(function (int $errno, string $errstr): bool {
+            if ($errno === E_DEPRECATED) {
+                $this->fail("Unexpected E_DEPRECATED notice triggered: $errstr");
+            }
+            return false;
+        });
+
+        try {
+            $client = new Client(self::$username, self::$password, self::$endpoint);
+            $client->getAvailableDisbursements(self::$merchant);
+        } finally {
+            restore_error_handler();
+        }
+
+        $this->assertTrue(true); // reached here without any deprecation notice
+    }
+
     private function createOrder($client): string
     {
         $order = json_decode(