diff --git a/src/client/auth.test.ts b/src/client/auth.test.ts
index 88a35082..39be8216 100644
--- a/src/client/auth.test.ts
+++ b/src/client/auth.test.ts
@@ -4,7 +4,7 @@ import {
   exchangeAuthorization,
   refreshAuthorization,
   registerClient,
-} from "./auth";
+} from "./auth.js";
 
 // Mock pkce-challenge
 jest.mock("pkce-challenge", () => ({