diff --git a/README.md b/README.md
index 232575c..8250ae5 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Community Hass.io Add-ons: AppDaemon
+# Community Hass.io Add-ons: AppDaemon 3
 
 [![GitHub Release][releases-shield]][releases]
 ![Project Stage][project-stage-shield]
@@ -25,6 +25,20 @@
 
 Python Apps and HADashboard for Home Assistant
 
+## Deprecation warning
+
+**This add-on is in a deprecated state!**
+
+This add-on is powered by AppDaemon 3.x, which has been replaced by
+AppDaemon 4.x.
+
+Are you looking for installing AppDaemon or upgrading to the new AppDaemon 4.x
+add-on?
+
+<https://github.com/hassio-addons/addon-appdaemon>
+
+Or search for "AppDaemon" in the Hass.io add-on store.
+
 ## About
 
 AppDaemon is a loosely coupled, multithreaded, sandboxed python execution
@@ -232,7 +246,7 @@ SOFTWARE.
 [maintenance-shield]: https://img.shields.io/maintenance/yes/2020.svg
 [patreon-shield]: https://frenck.dev/wp-content/uploads/2019/12/patreon.png
 [patreon]: https://www.patreon.com/
-[project-stage-shield]: https://img.shields.io/badge/project%20stage-production%20ready-brightgreen.svg
+[project-stage-shield]: https://img.shields.io/badge/project%20stage-%20!%20DEPRECATED%20%20%20!-ff0000.svg
 [python-packages]: https://pypi.org/
 [reddit]: https://reddit.com/r/homeassistant
 [releases-shield]: https://img.shields.io/github/release/hassio-addons/addon-appdaemon3.svg
diff --git a/appdaemon/.README.j2 b/appdaemon/.README.j2
index 65e9ee8..86732e9 100644
--- a/appdaemon/.README.j2
+++ b/appdaemon/.README.j2
@@ -1,4 +1,4 @@
-# Community Hass.io Add-ons: AppDaemon
+# Community Hass.io Add-ons: AppDaemon 3
 
 [![Release][release-shield]][release] ![Project Stage][project-stage-shield] ![Project Maintenance][maintenance-shield]
 
@@ -10,6 +10,19 @@
 
 Python Apps and HADashboard for Home Assistant
 
+## Deprecation warning
+
+**This add-on is in a deprecated state!**
+
+This add-on is powered by AppDaemon 3.x, which has been replaced by
+AppDaemon 4.x.
+
+Are you looking for installing AppDaemon or upgrading to the new AppDaemon 4.x add-on?
+
+<https://github.com/hassio-addons/addon-appdaemon>
+
+Or search for "AppDaemon" in the Hass.io add-on store.
+
 ## About
 
 AppDaemon is a loosely coupled, multithreaded, sandboxed python execution
@@ -70,7 +83,7 @@ If you are more interested in stable releases of our add-ons:
 [maintenance-shield]: https://img.shields.io/maintenance/yes/2020.svg
 [patreon-shield]: https://frenck.dev/wp-content/uploads/2019/12/patreon.png
 [patreon]: https://www.patreon.com/frenck
-[project-stage-shield]: https://img.shields.io/badge/project%20stage-production%20ready-brightgreen.svg
+[project-stage-shield]: https://img.shields.io/badge/project%20stage-%20!%20DEPRECATED%20%20%20!-ff0000.svg
 [release-shield]: https://img.shields.io/badge/version-{{ version }}-blue.svg
 [release]: {{ repo }}/tree/{{ version }}
 [screenshot]: https://github.com/hassio-addons/addon-appdaemon3/raw/master/images/screenshot.png
diff --git a/appdaemon/config.json b/appdaemon/config.json
index cde3674..b386f62 100755
--- a/appdaemon/config.json
+++ b/appdaemon/config.json
@@ -1,5 +1,5 @@
 {
-  "name": "AppDaemon",
+  "name": "AppDaemon 3",
   "version": "dev",
   "slug": "appdaemon3",
   "description": "Python Apps and HADashboard using AppDaemon 3.x for Home Assistant",