diff --git a/README.md b/README.md
index a8705fc..d057c65 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
 # pacta.data.validation <a href="https://rmi-pacta.github.io/pacta.data.validation"><img src="man/figures/logo.png" align="right" height="31" /></a>
 
+[![Project Status: Unsupported](https://www.repostatus.org/badges/latest/unsupported.svg)](https://www.repostatus.org/#unsupported)
+
+**This project is archived for future reference, but no new work is expected in this repository.**
+
 <!-- badges: start -->
 [![Lifecycle: experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html#experimental)
 [![R-CMD-check](https://github.com/RMI-PACTA/pacta.data.validation/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/RMI-PACTA/pacta.data.validation/actions/workflows/R-CMD-check.yaml)
@@ -37,4 +41,3 @@ library("pacta.data.validation")
 masterdata_debt_datastore <- fake_masterdata_debt_datastore(id = "x")
 validate_masterdata_debt_datastore(masterdata_debt_datastore)
 ```
-