diff --git a/desktop/src/lib/gateway-client.ts b/desktop/src/lib/gateway-client.ts
index d811d16..b146421 100644
--- a/desktop/src/lib/gateway-client.ts
+++ b/desktop/src/lib/gateway-client.ts
@@ -516,6 +516,7 @@ export class GatewayClient {
       thinking_enabled: opts?.thinking_enabled,
       reasoning_effort: opts?.reasoning_effort,
       plan_mode: opts?.plan_mode,
+      subagent_enabled: opts?.subagent_enabled,
     });
 
     return { runId };