diff --git a/examples/bsmtp-client-ts.ts b/examples/bsmtp-client-ts.ts
index 22a3276..5689e0a 100644
--- a/examples/bsmtp-client-ts.ts
+++ b/examples/bsmtp-client-ts.ts
@@ -44,7 +44,7 @@ const port = Number(process.argv[3]) || 25
 
 const socket = new PromiseDuplex(new net.Socket())
 const stdin = new PromiseReadable(byline(process.stdin, { keepEmptyLines: true }))
-const stdout = new PromiseWritable(process.stdout as NodeJS.WritableStream)
+const stdout = new PromiseWritable(process.stdout as any)
 
 socket.stream.connect(port, host, client)