diff --git a/README b/README
index 9adb8981e4a8d6fbd6181ed87c296b53b9635e8b..f014596940cdd1783ff84259e0a0f56b31c24042 100644
--- a/README
+++ b/README
@@ -1,3 +1,5 @@
+WARNING -- Under devellopment, only use as beta-tester
+
 66 - Helpers tools around S6 supervision suite
 --------------------------------