diff --git a/README.md b/README.md
index 35b0bae18..9d43bd8c2 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,13 @@
+> **Warning**
+>
+> Promscale has been discontinued and is deprecated.
+>
+> The code in this repository is no longer maintained.
+>
+> [Learn more](https://github.com/timescale/promscale/issues/1836).
+
+
+
 # Promscale
 
 [![Go](https://github.com/timescale/promscale/workflows/Go/badge.svg)](https://github.com/timescale/promscale/actions?query=workflow%3AGo)