diff --git a/src/pocketmine/plugin/PluginDescription.php b/src/pocketmine/plugin/PluginDescription.php
index e4332342e..4a102bf08 100644
--- a/src/pocketmine/plugin/PluginDescription.php
+++ b/src/pocketmine/plugin/PluginDescription.php
@@ -58,7 +58,7 @@ class PluginDescription{
 	private $compatibleOperatingSystems = [];
 	/**
 	 * @var string[][]
-	 * @phpstan-var array<string, list<mixed>>
+	 * @phpstan-var array<string, list<string>>
 	 */
 	private $extensions = [];
 	/** @var string[] */