diff --git a/README.md b/README.md
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+++ b/README.md
@@ -34,6 +34,7 @@ on Yjs. [![Become a Sponsor](https://img.shields.io/static/v1?label=Become%20a%2
 
 ## Who is using Yjs
 
+* [AFFiNE](https://affine.pro/) A local-first, privacy-first, open source knowledge base. 🏅
 * [Dynaboard](https://dynaboard.com/) Build web apps collaboratively. :star2:
 * [Relm](https://www.relm.us/) A collaborative gameworld for teamwork and
   community. :star: