diff --git a/lib/config/presets/internal/group.ts b/lib/config/presets/internal/group.ts
index 5b928774c8f762107db61611344fe65faac70db2..50ab4a69bba4aecebe597a1555d1142b5059dc6a 100644
--- a/lib/config/presets/internal/group.ts
+++ b/lib/config/presets/internal/group.ts
@@ -354,7 +354,12 @@ const staticGroups = {
       {
         groupName: 'PHPStan packages',
         matchDatasources: ['packagist'],
-        matchPackageNames: ['phpstan/phpstan', '//phpstan-/', '//larastan/'],
+        matchPackageNames: [
+          'phpstan/phpstan',
+          '//phpstan-/',
+          '//larastan/',
+          'phpstan/extension-installer',
+        ],
       },
     ],
   },