diff --git a/src/Concerns/HasSqids.php b/src/Concerns/HasSqids.php
index e9f47f2..9ddfcd4 100644
--- a/src/Concerns/HasSqids.php
+++ b/src/Concerns/HasSqids.php
@@ -13,7 +13,7 @@
 
 trait HasSqids
 {
-    protected function initializeHasSqids()
+    protected function initializeHasSqids(): void
     {
         $this->append(['sqid']);
     }