diff --git a/API.md b/API.md
index d013850..893ffaf 100644
--- a/API.md
+++ b/API.md
@@ -10,6 +10,18 @@ Login into the archive and get access token. Use this token for all other operat
 }
 ```
 
+# renew
+Renew access token.
+
+`curl -s -d '{"token":"MYSECRETTOKEN"}' https://my.domain/v1/renew`
+
+```json
+{
+  "success": 1,
+  "token": "MYNEWSECRETTOKEN"
+}
+```
+
 # get
 Get complete entries with metadata, document list and link list.