diff --git a/README.md b/README.md
index 003e95a..30427b3 100644
--- a/README.md
+++ b/README.md
@@ -394,13 +394,15 @@ Please remove secrets, cookies, private tokens, and customer data from logs befo
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-      <a href="https://proxy-seller.com/?utm_source=webclaw&utm_medium=github&utm_campaign=sponsor">
+      <a href="https://proxy-seller.com/?partner=KXMQNNLIGHXR4B">
         <img src="./assets/sponsors/proxy-seller-banner.png" alt="Proxy-Seller" width="300" />
       </a>
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     <td>
-      <strong>Proxy-Seller</strong> maintains a global network of residential and datacenter proxies for high-volume scraping, geographic rotation, and automated crawling pipelines.
-      <a href="https://proxy-seller.com/?utm_source=webclaw&utm_medium=github&utm_campaign=sponsor">Visit proxy-seller.com</a>.
+      <strong>Proxy-Seller</strong> maintains a global network of residential and datacenter proxies optimized for web extraction at scale.
+      The service supports high-volume concurrent scraping, geographic rotation, and integration with web extraction tools.
+      Use code <code>WBC15</code> for 15% off IPv4, IPv6, ISP, and Residential proxies, and 10% off Mobile at
+      <a href="https://proxy-seller.com/?partner=KXMQNNLIGHXR4B">proxy-seller.com</a>.
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