diff --git a/docs/restapi.md b/docs/restapi.md
index 91ebcecaa..dfc1cb0b4 100644
--- a/docs/restapi.md
+++ b/docs/restapi.md
@@ -22,7 +22,7 @@ Cookie: authenticationToken=TN2YBOMYtXB_hHtf4wTzm9p5tTuqq2i15yeuhcz2xXM
 
 The server will respond to an invalid token with a `401 Unauthorized` status.
 
-The server can request that the client updates its token with a `Set-Cookie` header:
+**[Not implemented at this time]** The server can request that the client updates its token with a `Set-Cookie` header:
 
 ```http
 HTTP/1.1 200 OK
diff --git a/packages/xo-server/docs/rest-api.md b/packages/xo-server/docs/rest-api.md
index f4772183b..a3cc7f888 100644
--- a/packages/xo-server/docs/rest-api.md
+++ b/packages/xo-server/docs/rest-api.md
@@ -20,7 +20,7 @@ Cookie: authenticationToken=TN2YBOMYtXB_hHtf4wTzm9p5tTuqq2i15yeuhcz2xXM
 
 The server will respond to an invalid token with a `401 Unauthorized` status.
 
-The server can request that the client updates its token with a `Set-Cookie` header:
+**[Not implemented at this time]** The server can request that the client updates its token with a `Set-Cookie` header:
 
 ```http
 HTTP/1.1 200 OK