diff --git a/README.md b/README.md
index 9da279b..5bffb91 100644
--- a/README.md
+++ b/README.md
@@ -229,6 +229,9 @@ $ses = new SimpleEmailService('AccessKey', 'SecretKey', $region_endpoint, $trigg
 
 ### Changelog
 
+v.0.9.4
+*   Fix for PHP8 errors (#81)
+
 v.0.9.3
 
 *   AWS Signature Version 4 is the default one (thanks to [VincentNikkelen](https://github.com/VincentNikkelen))
diff --git a/src/SimpleEmailService.php b/src/SimpleEmailService.php
index 6549868..67bccf6 100644
--- a/src/SimpleEmailService.php
+++ b/src/SimpleEmailService.php
@@ -46,7 +46,7 @@
 *
 * @link https://github.com/daniel-zahariev/php-aws-ses
 * @package AmazonSimpleEmailService
-* @version v0.9.1
+* @version v0.9.4
 */
 class SimpleEmailService
 {
@@ -67,7 +67,7 @@ class SimpleEmailService
 	const AWS_US_EAST_2 = 'email.us-east-2.amazonaws.com';
 	const AWS_US_GOV_WEST_1 = 'email.us-gov-west-1.amazonaws.com';
 	const AWS_US_WEST_2 = 'email.us-west-2.amazonaws.com';
-	
+
 	/**
 	 * Deprecated, available for backward compatibility
 	 */
@@ -146,7 +146,7 @@ public function __construct($accessKey = null, $secretKey = null, $host = self::
      *
      * @param string $requestSignatureVersion Value is ignored and V4 is used. This for BW compatibility.
      * @return SimpleEmailService $this
-     * 
+     *
      * @deprecated Currently only V4 supported.
      */
 	public function setRequestSignatureVersion($requestSignatureVersion) {
@@ -157,7 +157,7 @@ public function setRequestSignatureVersion($requestSignatureVersion) {
 
     /**
      * @return string
-     * 
+     *
      * @deprecated Not relevant when only V4 is supported.
      */
     public function getRequestSignatureVersion() {
diff --git a/src/SimpleEmailServiceMessage.php b/src/SimpleEmailServiceMessage.php
index b3539a7..29d2a31 100644
--- a/src/SimpleEmailServiceMessage.php
+++ b/src/SimpleEmailServiceMessage.php
@@ -4,7 +4,7 @@
  *
  * @link https://github.com/daniel-zahariev/php-aws-ses
  * @package AmazonSimpleEmailService
- * @version v0.9.1
+ * @version v0.9.4
  */
 final class SimpleEmailServiceMessage {
 
@@ -63,15 +63,15 @@ public function addTo($to) {
 
         return $this;
     }
-    
+
     /**
      * @return SimpleEmailServiceMessage $this
      */
     public function setTo($to) {
         $this->to = (array) $to;
-            
+
         $this->is_clean = false;
-        
+
         return $this;
     }
 
diff --git a/src/SimpleEmailServiceRequest.php b/src/SimpleEmailServiceRequest.php
index 430bdb7..fa0d530 100644
--- a/src/SimpleEmailServiceRequest.php
+++ b/src/SimpleEmailServiceRequest.php
@@ -4,7 +4,7 @@
 *
 * @link https://github.com/daniel-zahariev/php-aws-ses
 * @package AmazonSimpleEmailService
-* @version v0.9.1
+* @version v0.9.4
 */
 class SimpleEmailServiceRequest
 {
@@ -253,7 +253,7 @@ public function __destruct() {
 	* @param string $data Data
 	* @return integer
 	*/
-	private function __responseWriteCallback(&$curl, &$data) {
+	private function __responseWriteCallback($curl, $data) {
 		if (!isset($this->response->body)) {
 			$this->response->body = $data;
 		} else {