diff --git a/node/node.d.ts b/node/node.d.ts
index 515d7e489a..6ccd2caf89 100644
--- a/node/node.d.ts
+++ b/node/node.d.ts
@@ -324,6 +324,7 @@ declare namespace NodeJS {
         cwd(): string;
         env: any;
         exit(code?: number): void;
+        exitCode: number;
         getgid(): number;
         setgid(id: number): void;
         setgid(id: string): void;