diff --git a/libs/shutdown/src/shutdown.ts b/libs/shutdown/src/shutdown.ts
index 0106f1d..e8ffdbc 100644
--- a/libs/shutdown/src/shutdown.ts
+++ b/libs/shutdown/src/shutdown.ts
@@ -79,7 +79,7 @@ export class Shutdown {
   /**
    * Initiate graceful shutdown
    */
-  async shutdown(signal?: string): Promise<ShutdownResult> {
+  async shutdown(_signal?: string): Promise<ShutdownResult> {
     if (this.isShuttingDown) {
       return {
         success: false,