diff --git a/src/Json/JsonResource.php b/src/Json/JsonResource.php
index 845004d..fd4588a 100644
--- a/src/Json/JsonResource.php
+++ b/src/Json/JsonResource.php
@@ -12,18 +12,6 @@ class JsonResource extends \Illuminate\Http\Resources\Json\JsonResource
     use ResolvesResources;
     use ResolvesEloquentResources;
 
-    /**
-     * @deprecated This method can be removed when dropping support for Laravel 9.
-     */
-    public static function collection($resource)
-    {
-        return tap(static::newCollection($resource), function ($collection) { // @phpstan-ignore-line
-            if (property_exists(static::class, 'preserveKeys')) {
-                $collection->preserveKeys = (new static([]))->preserveKeys === true; // @phpstan-ignore-line
-            }
-        });
-    }
-
     protected function beforeResolveRoot(Request $request): void
     {
         $this->collectAndResolvePreloads($request, Collection::make([$this]));