diff --git a/README.adoc b/README.adoc
index e72304b..4700944 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,6 +1,15 @@
 = agrirouter-interface-documentation
 :imagesdir: modules/ROOT/assets/images
 
+[IMPORTANT]
+====
+*Deprecation of old docs*
+
+With the launch of the new agrirouter API ("`G4`") in April 2026, this documentation has been deprecated.
+
+Please visit our new https://agrirouter.com/docs[developer docs].
+====
+
 [abstract]
 == Abstract
 image::agrirouter.svg[agrirouter]
@@ -17,4 +26,4 @@ These files get automatically built and deployed on any change in the develop br
 === old links
 
 During the documentation structure change in May 2021, all old links became invalid. Please visit https://docs.my-agrirouter.com and navigate to the page you were looking for.
- 
\ No newline at end of file
+