diff --git a/README.md b/README.md
index fc5da322..70130faf 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@
 
 <sub>Sponsors</sub>
 
-<a href="https://caiaiu.com/register?aff=cli2api"><picture><source media="(prefers-color-scheme: dark)" srcset="./docs/assets/sponsors/caiai-dark.svg"><img src="./docs/assets/sponsors/caiai.svg" height="36" alt="CaiAI"></picture></a>
+<a href="https://caiaiu.com"><picture><source media="(prefers-color-scheme: dark)" srcset="./docs/assets/sponsors/caiai-dark.svg"><img src="./docs/assets/sponsors/caiai.svg" height="36" alt="CaiAI"></picture></a>
 
 <img src="./docs/assets/readme/hero-zh.svg" width="100%" alt="CLI2API — 把你自己的登录态，变成一个本机运行的 OpenAI 兼容 API">
 
diff --git a/README_EN.md b/README_EN.md
index 08f915ec..293d3e97 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -15,7 +15,7 @@ Deploy with Docker, manage accounts in the web console, and connect clients thro
 
 <sub>Sponsors</sub>
 
-<a href="https://caiaiu.com/register?aff=cli2api"><picture><source media="(prefers-color-scheme: dark)" srcset="./docs/assets/sponsors/caiai-dark.svg"><img src="./docs/assets/sponsors/caiai.svg" height="36" alt="CaiAI"></picture></a>
+<a href="https://caiaiu.com"><picture><source media="(prefers-color-scheme: dark)" srcset="./docs/assets/sponsors/caiai-dark.svg"><img src="./docs/assets/sponsors/caiai.svg" height="36" alt="CaiAI"></picture></a>
 
 <img src="./docs/assets/readme/hero-en.svg" width="100%" alt="CLI2API — turn your own logins into a local OpenAI-compatible API">