diff --git a/app/application/app/Services/ClearCacheCommandHandler.php b/app/application/app/Services/ClearCacheCommandHandler.php
index 73c9ff9..2d00ded 100644
--- a/app/application/app/Services/ClearCacheCommandHandler.php
+++ b/app/application/app/Services/ClearCacheCommandHandler.php
@@ -6,7 +6,7 @@ use App\Enums\CacheTag;
 
 final readonly class ClearCacheCommandHandler
 {
-    public function byTag(CacheTag $tag)
+    public function byTag(CacheTag $tag): void
     {
         $tag->getCache()->flush();
     }