diff --git a/src/EtlState.php b/src/EtlState.php
index ec31335..0820a85 100644
--- a/src/EtlState.php
+++ b/src/EtlState.php
@@ -82,7 +82,7 @@ public function flush(): void
     /**
      * Skip current item.
      */
-    public function skip(): void
+    public function skip(): never
     {
         throw new SkipRequest();
     }
@@ -90,7 +90,7 @@ public function skip(): void
     /**
      * Stop after current item.
      */
-    public function stop(): void
+    public function stop(): never
     {
         throw new StopRequest();
     }