diff --git a/README.md b/README.md
index f3bbe6a04..8e1067376 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,7 @@ Polyfills are provided for:
 - the `SQLite3Exception` class introduced in PHP 8.3;
 - the `mb_ucfirst` and `mb_lcfirst` functions introduced in PHP 8.4;
 - the `array_find`, `array_find_key`, `array_any` and `array_all` functions introduced in PHP 8.4;
+- the `Deprecated` attribute introduced in PHP 8.4;
 
 It is strongly recommended to upgrade your PHP version and/or install the missing
 extensions whenever possible. This polyfill should be used only when there is no
diff --git a/composer.json b/composer.json
index ee5e7180b..9a3012ed0 100644
--- a/composer.json
+++ b/composer.json
@@ -64,6 +64,7 @@
             "src/Intl/Icu/Resources/stubs",
             "src/Intl/MessageFormatter/Resources/stubs",
             "src/Intl/Normalizer/Resources/stubs",
+            "src/Php84/Resources/stubs",
             "src/Php83/Resources/stubs",
             "src/Php82/Resources/stubs",
             "src/Php81/Resources/stubs",
diff --git a/src/Php83/composer.json b/src/Php83/composer.json
index a5fb4241d..02a0bf830 100644
--- a/src/Php83/composer.json
+++ b/src/Php83/composer.json
@@ -16,8 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=7.1",
-        "symfony/polyfill-php80": "^1.14"
+        "php": ">=7.1"
     },
     "autoload": {
         "psr-4": { "Symfony\\Polyfill\\Php83\\": "" },
diff --git a/src/Php84/README.md b/src/Php84/README.md
index 443e3d1b9..96921439d 100644
--- a/src/Php84/README.md
+++ b/src/Php84/README.md
@@ -5,6 +5,7 @@ This component provides features added to PHP 8.4 core:
 
 - [`mb_ucfirst` and `mb_lcfirst`](https://wiki.php.net/rfc/mb_ucfirst)
 - [`array_find`, `array_find_key`, `array_any` and `array_all`](https://wiki.php.net/rfc/array_find)
+- [`Deprecated`](https://wiki.php.net/rfc/deprecated_attribute)
 
 More information can be found in the
 [main Polyfill README](https://github.com/symfony/polyfill/blob/main/README.md).
diff --git a/src/Php84/Resources/stubs/Deprecated.php b/src/Php84/Resources/stubs/Deprecated.php
new file mode 100644
index 000000000..aa039e3e5
--- /dev/null
+++ b/src/Php84/Resources/stubs/Deprecated.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+if (\PHP_VERSION_ID < 80400) {
+    #[Attribute(Attribute::TARGET_METHOD | Attribute::TARGET_FUNCTION | Attribute::TARGET_CLASS_CONSTANT)]
+    final class Deprecated
+    {
+        public readonly ?string $message;
+        public readonly ?string $since;
+    
+        public function __construct(?string $message = null, ?string $since = null)
+        {
+            $this->message = $message;
+            $this->since = $since;
+        }
+    }
+}
diff --git a/src/Php84/composer.json b/src/Php84/composer.json
index 0819da716..9ceeee1be 100644
--- a/src/Php84/composer.json
+++ b/src/Php84/composer.json
@@ -20,7 +20,8 @@
     },
     "autoload": {
         "psr-4": { "Symfony\\Polyfill\\Php84\\": "" },
-        "files": [ "bootstrap.php" ]
+        "files": [ "bootstrap.php" ],
+        "classmap": [ "Resources/stubs" ]
     },
     "minimum-stability": "dev",
     "extra": {