diff --git a/backend/src/index.ts b/backend/src/index.ts
index bac28fcd..033b21d8 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -107,6 +107,7 @@ if (process.env.NODE_ENV === "production") {
   };
 
   process.on("uncaughtException", errorHandler);
+  process.on("unhandledRejection", errorHandler);
 }
 
 // Verify required Node.js version