diff --git a/CHANGES.md b/CHANGES.md
index ad87373..7a0c177 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,7 @@
 ## 1.6.4
 * Will use POST instead of GET when retrieving result.
+* Remove deprecated `curl_close` for PHP version 8. https://www.php.net/manual/en/function.curl-close.php.
+* Support PHP `8.5`.
 
 ## 1.6.3
 * Add minimum TLS 1.2 version to curl options as protocol negotiation on certain openssl/libcurl versions is flaky.
diff --git a/lib/Tinify/Client.php b/lib/Tinify/Client.php
index 93bd513..0d8ed0c 100644
--- a/lib/Tinify/Client.php
+++ b/lib/Tinify/Client.php
@@ -114,6 +114,8 @@ function request($method, $url, $body = NULL) {
                 $headerSize = curl_getinfo($request, CURLINFO_HEADER_SIZE);
                 if (PHP_VERSION_ID < 80000) {
                     curl_close($request);
+                } else {
+                    unset($request);
                 }
 
                 $headers = self::parseHeaders(substr($response, 0, $headerSize));
@@ -144,6 +146,8 @@ function request($method, $url, $body = NULL) {
                 $message = sprintf("%s (#%d)", curl_error($request), curl_errno($request));
                 if (PHP_VERSION_ID < 80000) {
                     curl_close($request);
+                } else {
+                    unset($request);
                 }
                 if ($retries > 0) continue;
                 throw new ConnectionException("Error while connecting: " . $message);