diff --git a/README.md b/README.md
index 179a3d65be..d3f745d6c1 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,10 @@ Compared the official one, we allow to use hacks or non-upstreamable patches / m
 
 Default login address: http://192.168.1.1 or http://immortalwrt.lan, username: __root__, password: _none_.
 
+## Deprecation notice
+
+Support for the ImmortalWrt 18.06 is EoL. Please consider upgrading to ImmortalWrt 21.02 stable release.
+
 ## Development
 To build your own firmware you need a GNU/Linux, BSD or MacOSX system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.<br/>