diff --git a/src/client.ts b/src/client.ts
index 91b150c8cb0..a8836947249 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -7524,7 +7524,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
             undefined,
             { refresh_token: refreshToken },
             {
-                prefix: ClientPrefix.V1,
+                prefix: ClientPrefix.V3,
                 inhibitLogoutEmit: true, // we don't want to cause logout loops
             },
         );