diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 500c82d..fb3c185 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -102,6 +102,7 @@ export default function ESLintPlugin(
       );
     },
     async buildEnd() {
+      debug("==== buildEnd hook ====");
       if (worker) await worker.terminate();
     },
   };