diff --git a/API.md b/API.md
index d9cc34c0..eb08c93e 100644
--- a/API.md
+++ b/API.md
@@ -13,6 +13,7 @@ Current websites using this API:
 - https://npm.taobao.org
 - https://bestofjs.org
 - https://socket.dev
+- picocolors
 
 ## Endpoints