diff --git a/types/node/v6/index.d.ts b/types/node/v6/index.d.ts
index c8470c7f76..baf0776dcf 100644
--- a/types/node/v6/index.d.ts
+++ b/types/node/v6/index.d.ts
@@ -487,7 +487,7 @@ declare namespace NodeJS {
         cwd(): string;
         debugPort: number;
         emitWarning(warning: string | Error, name?: string, ctor?: Function): void;
-        env: any;
+        env: ProcessEnv;
         exit(code?: number): void;
         exitCode: number;
         getgid(): number;