diff --git a/ext.php b/ext.php
index f6eaba1..4e69656 100644
--- a/ext.php
+++ b/ext.php
@@ -20,8 +20,8 @@ class ext extends \phpbb\extension\base
 {
 	/**
 	 * Check whether the extension can be enabled.
-	 * The current phpBB version should meet or exceed
-	 * the minimum version required by this extension.
+	 * The current phpBB and PHP version should meet or
+	 * exceed the minimum version required by this extension:
 	 *
 	 * @return bool|array
 	 * @access public
@@ -42,7 +42,7 @@ public function is_enableable()
 	}
 
 	/**
-	 * Require phpBB 3.3.19
+	 * Require phpBB 3.3.19 due to several security fixes in the phpBB software.
 	 *
 	 * @return bool
 	 */
@@ -52,12 +52,12 @@ public function check_phpbb_version()
 	}
 
 	/**
-	 * Require PHP 8.0
+	 * Requires PHP 8.3.36 due to security fixes.
 	 *
 	 * @return bool
 	 */
 	public function check_php_version()
 	{
-		return PHP_VERSION_ID >= 80000;
+		return PHP_VERSION_ID >= 80336;
 	}
 }
diff --git a/language/en/adduser_install.php b/language/en/adduser_install.php
index 69786ac..70a1a64 100644
--- a/language/en/adduser_install.php
+++ b/language/en/adduser_install.php
@@ -38,5 +38,5 @@
 //
 
 $lang = array_merge($lang, [
-	'ADDUSER_NOT_ENABLEABLE'	=> 'Add User could not be enabled. The minimum requirements of phpBB 3.3.19 and/or PHP 8.0.0 were not satisfied.',
+	'ADDUSER_NOT_ENABLEABLE'	=> 'Add User could not be enabled. The minimum requirements of phpBB 3.3.19 and/or PHP 8.3.36 were not satisfied.',
 ]);