diff --git a/CHANGELOG.md b/CHANGELOG.md
index ddf57276..2e78f460 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [4.4.3] - 2022-03-13
+### Fixed
+- PHP 8.1 deprecation notice [#480]
+
 ## [4.4.2] - 2022-02-13
 ### Added
 - Options to customize the CurlClient to perform http queries [#474].
@@ -176,7 +180,9 @@ Full library refactoring.
 [#468]: https://github.com/oscarotero/Embed/issues/468
 [#473]: https://github.com/oscarotero/Embed/issues/473
 [#474]: https://github.com/oscarotero/Embed/issues/474
+[#480]: https://github.com/oscarotero/Embed/issues/480
 
+[4.4.3]: https://github.com/oscarotero/Embed/compare/v4.4.2...v4.4.3
 [4.4.2]: https://github.com/oscarotero/Embed/compare/v4.4.1...v4.4.2
 [4.4.1]: https://github.com/oscarotero/Embed/compare/v4.4.0...v4.4.1
 [4.4.0]: https://github.com/oscarotero/Embed/compare/v4.3.5...v4.4.0
diff --git a/src/ApiTrait.php b/src/ApiTrait.php
index f6614625..3dcb781b 100644
--- a/src/ApiTrait.php
+++ b/src/ApiTrait.php
@@ -96,7 +96,7 @@ public function time(string ...$keys): ?DateTime
         $time = $this->str(...$keys);
         $datetime = $time ? date_create($time) : null;
 
-        if (!$datetime && ctype_digit($time)) {
+        if (!$datetime && $time && ctype_digit($time)) {
             $datetime = date_create_from_format('U', $time);
         }