diff --git a/cli/src/connect.rs b/cli/src/connect.rs
index 7b43c12..fa32694 100644
--- a/cli/src/connect.rs
+++ b/cli/src/connect.rs
@@ -17,7 +17,7 @@ use std::path::PathBuf;
 
 /// Native-messaging host name; must match `HOST_NAME` in the extension and the
 /// manifest filename.
-pub const HOST_NAME: &str = "com.leeguoo.chrome_use";
+pub const HOST_NAME: &str = "com.agent_browser.connect";
 
 /// Stable id of the `ab-connect` extension, pinned by the `key` in its
 /// manifest.json (and the signing key of the published `.crx`). Chrome only lets
diff --git a/extensions/ab-connect/NOTICE.md b/extensions/ab-connect/NOTICE.md
index db020ae..0255c20 100644
--- a/extensions/ab-connect/NOTICE.md
+++ b/extensions/ab-connect/NOTICE.md
@@ -6,6 +6,6 @@ from **openclaw-browser-relay** by chengyixu
 
 Changes for chrome-use: rebranded to "chrome-use connect"; the
 transport is rewritten from a localhost WebSocket + shared token to Chrome
-**native messaging** (host `com.leeguoo.chrome_use`) — no port, no token,
+**native messaging** (host `com.agent_browser.connect`) — no port, no token,
 Chrome authenticates the extension to the host by id. WebSocket/token/options
 code removed.
diff --git a/extensions/ab-connect/background.js b/extensions/ab-connect/background.js
index 0d56f6c..8531f79 100644
--- a/extensions/ab-connect/background.js
+++ b/extensions/ab-connect/background.js
@@ -16,7 +16,7 @@
 // attach + Target handling; the transport is rewritten from WebSocket+token to
 // native messaging.
 
-const HOST_NAME = 'com.leeguoo.chrome_use'
+const HOST_NAME = 'com.agent_browser.connect'
 const SKIP_URL = /^(chrome|chrome-extension|devtools|chrome-untrusted|edge|about):/i
 
 /** @type {chrome.runtime.Port|null} */
diff --git a/extensions/ab-connect/manifest.json b/extensions/ab-connect/manifest.json
index bf8fb07..1e85e57 100644
--- a/extensions/ab-connect/manifest.json
+++ b/extensions/ab-connect/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 3,
   "name": "chrome-use",
-  "version": "0.5.0",
+  "version": "0.4.3",
   "description": "Let chrome-use drive your logged-in Chrome \u2014 install once, no token, no per-use confirmation.",
   "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA6vQIyscGIPYPZdSpPwPL0+0gxUROyRgCpmvCSDoc8XUm4qm97VbKnD9Ijc1lV22lNWZtE78gaRjt6BeSfuMgnBymnhLKjN1gU6AI5QUU0mrJyeHdWKvrKQR5FmsM2A7Xr1ykE2SiiS8zNUS3Y/6O5l+Nva7wrVy6E4a2dkBVQkOsu+DV+nEZvhIyuDY5D5SPXqNwUTWTaglwj5mjvHz36xSwCWlPmrtJ+ED0AUyrb2z4GIOmvk4kqtBVrh/UD058klLo4CkYOnIybB5aV6WYuwarfPY4bF/dLggPem+ewLNTUNBuwrxj/A4nUv0LJTuRO8rR7f8WR9qnRCY0Ic5saQIDAQAB",
   "icons": {