diff --git a/crates/goose/src/providers/chatgpt_codex.rs b/crates/goose/src/providers/chatgpt_codex.rs
index 493ee6199f..2508193dcb 100644
--- a/crates/goose/src/providers/chatgpt_codex.rs
+++ b/crates/goose/src/providers/chatgpt_codex.rs
@@ -47,6 +47,7 @@ const HTML_AUTO_CLOSE_TIMEOUT_MS: u64 = 2000;
 const CHATGPT_CODEX_PROVIDER_NAME: &str = "chatgpt_codex";
 pub const CHATGPT_CODEX_DEFAULT_MODEL: &str = "gpt-5.1-codex";
 pub const CHATGPT_CODEX_KNOWN_MODELS: &[&str] = &[
+    "gpt-5.3-codex",
     "gpt-5.2-codex",
     "gpt-5.1-codex",
     "gpt-5.1-codex-mini",
@@ -205,6 +206,8 @@ fn create_codex_request(
             .collect();
 
         payload_obj.insert("tools".to_string(), json!(tools_spec));
+        payload_obj.insert("tool_choice".to_string(), json!("auto"));
+        payload_obj.insert("parallel_tool_calls".to_string(), json!(true));
     }
 
     if let Some(temp) = model_config.temperature {
diff --git a/ui/desktop/src/components/ProviderGuard.tsx b/ui/desktop/src/components/ProviderGuard.tsx
index d211366640..f6751e25fa 100644
--- a/ui/desktop/src/components/ProviderGuard.tsx
+++ b/ui/desktop/src/components/ProviderGuard.tsx
@@ -28,7 +28,7 @@ interface ProviderGuardProps {
 }
 
 export default function ProviderGuard({ didSelectProvider, children }: ProviderGuardProps) {
-  const { read, upsert } = useConfig();
+  const { read, upsert, getProviders } = useConfig();
   const navigate = useNavigate();
   const [isChecking, setIsChecking] = useState(true);
   const [hasProvider, setHasProvider] = useState(false);
@@ -111,6 +111,7 @@ export default function ProviderGuard({ didSelectProvider, children }: ProviderG
     try {
       const result = await startChatGptCodexSetup();
       if (result.success) {
+        await getProviders(true);
         setSwitchModelProvider('chatgpt_codex');
         setShowSwitchModelModal(true);
       } else {