diff --git a/demo/client/harmonize_example_client.ts b/demo/client/harmonize_example_client.ts
index 6c71532..1c7b833 100644
--- a/demo/client/harmonize_example_client.ts
+++ b/demo/client/harmonize_example_client.ts
@@ -16,7 +16,7 @@
 
 import * as path from "node:path";
 import { fileURLToPath } from "node:url";
-import { GetJobResponse, HarmonizeRequest, HarmonizeResponse, JOB_STATUS } from "./rpc_types.js";
+import { GetJobResponse, HarmonizeRequest, HarmonizeResponse, JOB_STATUS } from "./rpc_types.ts";
 import { RpcClient } from "./rpc_client.js";
 
 // The single RPC endpoint exposed by the server.