diff --git a/composer.json b/composer.json
index 783b1461b89cab8566867a2a2a0ddbda7690cfd5..441c77eb4e3767b7784288363fb23e66944e8a90 100644
--- a/composer.json
+++ b/composer.json
@@ -48,7 +48,7 @@
         "preferred-install": "dist",
         "autoloader-suffix": "Drupal9",
         "platform": {
-            "php": "8.0.2"
+            "php": "8.0.0"
         },
         "allow-plugins": {
             "composer/installers": true,
diff --git a/composer.lock b/composer.lock
index f5065a15d80362b6cbe92cebfbf1c68dccb21ea9..ea77dc356ac3ecc3517a70d7fc731de945a8b89a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "c349b824aa23e0ca51171bd05b895db3",
+    "content-hash": "4da5f467b822f165f9e26ae5faa8ec08",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -535,7 +535,7 @@
             "dist": {
                 "type": "path",
                 "url": "core",
-                "reference": "4768651a943f1afe5c2b2a1122dbfdfc7bf221a7"
+                "reference": "ded302b3b87ab926e48cbf067878daa142d624d2"
             },
             "require": {
                 "asm89/stack-cors": "^1.1",
@@ -561,7 +561,7 @@
                 "laminas/laminas-feed": "^2.12",
                 "masterminds/html5": "^2.1",
                 "pear/archive_tar": "^1.4.14",
-                "php": ">=8.0.2",
+                "php": ">=8.0.0",
                 "psr/log": "^1.0",
                 "stack/builder": "^1.0",
                 "symfony/console": "^4.4",
@@ -8327,7 +8327,7 @@
     "platform": [],
     "platform-dev": [],
     "platform-overrides": {
-        "php": "8.0.2"
+        "php": "8.0.0"
     },
     "plugin-api-version": "2.1.0"
 }
diff --git a/core/INSTALL.txt b/core/INSTALL.txt
index 739c3071170f3d233933c02d227b2867c1edbfea..721879d6d255f7fde57ba48ee774cd4ba3c7dd7e 100644
--- a/core/INSTALL.txt
+++ b/core/INSTALL.txt
@@ -15,7 +15,7 @@ QUICKSTART
 ----------------------
 
 Prerequisites:
-- PHP 8.0.2 (or greater) (https://php.net).
+- PHP 8.0.0 (or greater) (https://php.net).
 
 In the instructions below, replace the version x.y.z with the specific version
 you wish to download. Example: 8.6.0.zip. You can find the latest stable version
@@ -48,7 +48,7 @@ Drupal requires:
 - A web server with PHP support, for example:
   - Apache 2.4.7 (or greater) (http://httpd.apache.org/).
   - Nginx 1.1 (or greater) (http://nginx.com/).
-- PHP 8.0.2 (or greater) (http://php.net/).
+- PHP 8.0.0 (or greater) (http://php.net/).
 - One of the following databases:
   - MySQL 5.7.8 (or greater) (http://www.mysql.com/).
   - MariaDB 10.3.7 (or greater) (https://mariadb.org/). MariaDB is a fully
diff --git a/core/composer.json b/core/composer.json
index fb77b3c96de307bf7fb13fd9ae19a5e0c5d02bbd..742361bebd9ef4bb411ab3becaebb3b082b7f578 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -17,7 +17,7 @@
         "ext-SPL": "*",
         "ext-tokenizer": "*",
         "ext-xml": "*",
-        "php": ">=8.0.2",
+        "php": ">=8.0.0",
         "symfony/console": "^4.4",
         "symfony/dependency-injection": "^4.4",
         "symfony/event-dispatcher": "^4.4",
diff --git a/core/install.php b/core/install.php
index 6b7996020d9eed006f1c68e362a3785709740850..347f027dac15c249e7c11801f651e582815cad58 100644
--- a/core/install.php
+++ b/core/install.php
@@ -29,8 +29,8 @@
 // hardcoded minimum PHP version below (both in the version_compare() call and
 // in the printed message to the user) whenever \Drupal::MINIMUM_PHP is
 // updated.
-if (version_compare(PHP_VERSION, '8.0.2') < 0) {
-  print 'Your PHP installation is too old. Drupal requires at least PHP 8.0.2. See the <a href="https://www.drupal.org/docs/9/how-drupal-9-is-made-and-what-is-included/environment-requirements-of-drupal-9#s-php-version-requirement">Environment requirements of Drupal 9</a> page for more information.';
+if (version_compare(PHP_VERSION, '8.0.0') < 0) {
+  print 'Your PHP installation is too old. Drupal requires at least PHP 8.0.0. See the <a href="https://www.drupal.org/docs/9/how-drupal-9-is-made-and-what-is-included/environment-requirements-of-drupal-9#s-php-version-requirement">Environment requirements of Drupal 9</a> page for more information.';
   exit;
 }
 
diff --git a/core/lib/Drupal.php b/core/lib/Drupal.php
index a42a0f956458861667e32ed847f240d94a56ec21..604fad7e278a5c460f7bb423ac7885a611dffb79 100644
--- a/core/lib/Drupal.php
+++ b/core/lib/Drupal.php
@@ -96,7 +96,7 @@ class Drupal {
    *   that Drupal no longer supports that PHP version.
    * - An error is shown in the status report that the PHP version is too old.
    */
-  const MINIMUM_SUPPORTED_PHP = '8.0.2';
+  const MINIMUM_SUPPORTED_PHP = '8.0.0';
 
   /**
    * Minimum allowed version of PHP for Drupal to be bootstrapped.
@@ -114,7 +114,7 @@ class Drupal {
    * - Once in the error message printed to the user immediately after.
    * Remember to update both whenever this constant is updated.
    */
-  const MINIMUM_PHP = '8.0.2';
+  const MINIMUM_PHP = '8.0.0';
 
   /**
    * Minimum recommended value of PHP memory_limit.