diff --git a/develop.txt b/develop.txt
index bb3ec51..32d3e94 100644
--- a/develop.txt
+++ b/develop.txt
@@ -283,6 +283,7 @@ done
 - Run integration and upgrade tests.
 - Run fuzzing tests for a while.
 - Deploy to test environment. Test the update instructions.
+- Test mox localserve on various OSes (linux, bsd, macos, windows).
 - Send and receive email through the major webmail providers, check headers.
 - Send and receive email with imap4/smtp clients.
 - Check DNS check admin page.