diff --git a/ext.php b/ext.php
index f02564c..6128c35 100644
--- a/ext.php
+++ b/ext.php
@@ -62,7 +62,7 @@ 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
 	 */
@@ -72,13 +72,13 @@ public function check_phpbb_version()
 	}
 
 	/**
-	 * Require PHP 7.4
+	 * Requires PHP 8.3.36 due to security fixes.
 	 *
 	 * @return bool
 	 */
 	public function check_php_version()
 	{
-		return PHP_VERSION_ID >= 70400;
+		return PHP_VERSION_ID >= 80336;
 	}
 
 	/**
diff --git a/language/en/install_editedpostsunread.php b/language/en/install_editedpostsunread.php
index ab6773d..889cf5d 100644
--- a/language/en/install_editedpostsunread.php
+++ b/language/en/install_editedpostsunread.php
@@ -39,6 +39,6 @@
 //
 
 $lang = array_merge($lang, [
-	'EDITEDPOSTSUNREAD_NOT_ENABLEABLE'	=> 'Mark Edited Posts Unread could not be enabled. The minimum requirements of phpBB 3.3.19 and/or PHP 7.4.0 were not satisfied.',
+	'EDITEDPOSTSUNREAD_NOT_ENABLEABLE'	=> 'Mark Edited Posts Unread could not be enabled. The minimum requirements of phpBB 3.3.19 and/or PHP 8.3.36 were not satisfied.',
 	'EDITEDPOSTSUNREAD_DISABLE_OLD'	=> 'Disable the old “%s” extension first. Keep its data; do not delete it.',
 ]);