diff --git a/cors/cors.d.ts b/cors/cors.d.ts
index eaf917fb1f..97ef574138 100644
--- a/cors/cors.d.ts
+++ b/cors/cors.d.ts
@@ -16,6 +16,7 @@ declare module "cors" {
             exposedHeaders?: any;
             credentials?: boolean;
             maxAge?: number;
+            preflightContinue?: boolean;
         }
     }