diff --git a/README.md b/README.md
index 0e8a7ad..7975f7c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,10 @@
 python-rtmbot
 =============
 
+**This project is no longer under active development.** If you’re just getting started, we recommend taking a look at the [Python SDK](https://slack.dev/python-slackclient) first. If you’ve been using this project, only critical issues (such as security issues) will be addressed, but we advise planning to migrate to the Python SDK. You can still [file an issue](https://github.com/slackapi/python-rtmbot/issues/new) and ask us for help doing that!
+
+:bulb: If you’re interested in maintaining this package in the future, please [get in touch](mailto:opensource@slack.com)
+
 [![Build Status](https://travis-ci.org/slackapi/python-rtmbot.png)](https://travis-ci.org/slackapi/python-rtmbot)
 [![Coverage Status](https://coveralls.io/repos/github/slackhq/python-rtmbot/badge.svg?branch=master)](https://coveralls.io/github/slackhq/python-rtmbot?branch=master)