diff --git a/README.md b/README.md
index 2c213ad..e008b18 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Publiccode Checker
 
+> **Warning: This repository is obsolete.** publiccode.yml validation is now supported by the [DON Checker](https://developer-overheid-nl.github.io/don-checker/). Please use that tool instead.
+
 This repository contains a checker (validation & linting) for the [Publiccode.ymnl].
 
 URL: https://developer-overheid-nl.github.io/publiccode-checker/
diff --git a/publiccode.yml b/publiccode.yml
index 68331f0..068bee5 100644
--- a/publiccode.yml
+++ b/publiccode.yml
@@ -4,7 +4,7 @@ name: Publiccode Checker
 url: https://github.com/developer-overheid-nl/publiccode-checker
 landingURL: https://developer-overheid-nl.github.io/publiccode-checker/
 softwareType: standalone/web
-developmentStatus: stable
+developmentStatus: obsolete
 
 categories:
   - it-development