diff --git a/core/install.php b/core/install.php
index f859726aab..6d5b3d143e 100644
--- a/core/install.php
+++ b/core/install.php
@@ -26,7 +26,7 @@
 
 // Exit early if running an incompatible PHP version to avoid fatal errors.
 if (version_compare(PHP_VERSION, \Drupal::MINIMUM_PHP) < 0) {
-  print 'Your PHP installation is too old. Drupal requires at least PHP ' . \Drupal::MINIMUM_PHP . '. See the <a href="https://www.drupal.org/node/3053125">Environment requirements of Drupal 9</a> page for more information.';
+  print 'Your PHP installation is too old. Drupal requires at least PHP ' . \Drupal::MINIMUM_PHP . '. See the <a href="https://www.drupal.org/docs/9/how-drupal-9-is-made-and-what-is-included/environment-requirements-of-drupal-9">Environment requirements of Drupal 9</a> page for more information.';
   exit;
 }
 
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index db3f910d24..0372ad3d70 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -203,11 +203,11 @@ function system_requirements($phase) {
 
   // Check if the PHP version is below what Drupal supports.
   if (version_compare($phpversion, \Drupal::MINIMUM_SUPPORTED_PHP) < 0) {
-    $requirements['php']['description'] = t('Your PHP installation is too old. Drupal requires at least PHP %version. It is recommended to upgrade to PHP version %recommended or higher for the best ongoing support. See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Drupal 8 PHP requirements handbook page</a> for more information.',
+    $requirements['php']['description'] = t('Your PHP installation is too old. Drupal requires at least PHP %version. It is recommended to upgrade to PHP version %recommended or higher for the best ongoing support. See <a href="http://php.net/supported-versions.php">PHP\'s version support documentation</a> and the <a href=":php_requirements">Environment requirements of Drupal 9</a> page for more information.',
       [
         '%version' => \Drupal::MINIMUM_SUPPORTED_PHP,
         '%recommended' => \Drupal::RECOMMENDED_PHP,
-        ':php_requirements' => 'https://www.drupal.org/docs/8/system-requirements/php',
+        ':php_requirements' => 'https://www.drupal.org/docs/9/how-drupal-9-is-made-and-what-is-included/environment-requirements-of-drupal-9#s-php-version-requirement',
       ]
     );
     $requirements['php']['severity'] = REQUIREMENT_ERROR;
diff --git a/core/tests/Drupal/Tests/RequirementsPageTrait.php b/core/tests/Drupal/Tests/RequirementsPageTrait.php
index 16377ea106..0c2cc2a114 100644
--- a/core/tests/Drupal/Tests/RequirementsPageTrait.php
+++ b/core/tests/Drupal/Tests/RequirementsPageTrait.php
@@ -13,7 +13,7 @@ trait RequirementsPageTrait {
   protected function updateRequirementsProblem() {
     // Assert a warning is shown on older test environments.
     $links = $this->getSession()->getPage()->findAll('named', ['link', 'try again']);
-    if (version_compare(phpversion(), \Drupal::MINIMUM_SUPPORTED_PHP) < 0) {
+    if ($links && version_compare(phpversion(), \Drupal::MINIMUM_SUPPORTED_PHP) < 0) {
       $this->assertNoText('Errors found');
       $this->assertWarningSummaries(['PHP']);
       $this->clickLink('try again');