diff --git a/README.md b/README.md
index c93805f..7835209 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ A spam protection field for Silverstripe using the hCaptcha service.
 
 * Silverstripe Framework 4.x
 * [Silverstripe Spam Protection 3.x](https://github.com/silverstripe/silverstripe-spamprotection/)
-* PHP CURL
+* [Guzzle 6.5](https://github.com/guzzle/guzzle/tree/6.5)
 
 ## Installation (with composer)
 
diff --git a/composer.json b/composer.json
index fb58576..123dba8 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,7 @@
         }
     ],
     "require": {
+        "guzzlehttp/guzzle": "^6.5",
         "silverstripe/framework": "^4.0",
         "silverstripe/spamprotection": "^3.0"
     },
diff --git a/src/Forms/HCaptchaField.php b/src/Forms/HCaptchaField.php
index 319ebc0..1893ea0 100644
--- a/src/Forms/HCaptchaField.php
+++ b/src/Forms/HCaptchaField.php
@@ -79,9 +79,9 @@ public function Field($properties = [])
      */
     public function validate($validator)
     {
-        $hCaptchaResponse = Controller::curr()->getRequest()->requestVar('h-captcha-response');
+        $valid = $this->processCaptcha();
 
-        if (!isset($hCaptchaResponse)) {
+        if (!$valid) {
             $validator->validationError(
                 $this->name,
                 _t(
@@ -90,50 +90,45 @@ public function validate($validator)
                 ),
                 'validation'
             );
-
-            return false;
         }
 
-        if (!function_exists('curl_init')) {
-            user_error('You must enable php-curl to use this field', E_USER_ERROR);
+        return $valid;
+    }
+
+
+    /**
+     * Validates the captcha against the hCaptcha API
+     * @return bool Returns boolean true if valid false if not
+     */
+    private function processCaptcha()
+    {
+        $hCaptchaResponse = Controller::curr()->getRequest()->requestVar('h-captcha-response');
 
+        if (!isset($hCaptchaResponse) || !$hCaptchaResponse) {
             return false;
         }
 
         $secretKey = $this->getSecretKey();
-        $url = 'https://hcaptcha.com/siteverify' .
-            '?secret=' . $secretKey .
-            '&response=' . rawurlencode($hCaptchaResponse) .
-            '&remoteip=' . rawurlencode($_SERVER['REMOTE_ADDR']);
-        $ch = curl_init($url);
-
-        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
-        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-        curl_setopt($ch, CURLOPT_USERAGENT, str_replace(',', '/', 'SilverStripe'));
-        $response = json_decode(curl_exec($ch), true);
-
-        if (is_array($response)) {
-            if (array_key_exists('success', $response) && $response['success'] == false) {
-                $validator->validationError(
-                    $this->name,
-                    _t(
-                        'X3dgoo\\HCaptcha\\Forms\\HCaptchaField.EMPTY',
-                        'Please answer the captcha. If you do not see the captcha please enable Javascript'
-                    ),
-                    'validation'
-                );
-
-                return false;
-            }
-        } else {
-            $validator->validationError(
-                $this->name,
-                _t(
-                    'X3dgoo\\HCaptcha\\Forms\\HCaptchaField.VALIDATE_ERROR',
-                    'Captcha could not be validated'
-                ),
-                'validation'
-            );
+
+        $client = new \GuzzleHttp\Client([
+            'base_uri' => 'https://hcaptcha.com/',
+        ]);
+
+        $response = $client->request(
+            'GET',
+            'siteverify',
+            [
+                'query' => [
+                    'secret' => $secretKey,
+                    'response' => rawurlencode($hCaptchaResponse),
+                    'remoteip' => rawurlencode($_SERVER['REMOTE_ADDR']),
+                ],
+            ]
+        );
+
+        $response = json_decode($response->getBody(), true);
+
+        if (!is_array($response)) {
             $logger = Injector::inst()->get(LoggerInterface::class);
             $logger->error(
                 'Captcha validation failed as request was not successful.'
@@ -142,6 +137,10 @@ public function validate($validator)
             return false;
         }
 
+        if (array_key_exists('success', $response) && $response['success'] === false) {
+            return false;
+        }
+
         return true;
     }