diff --git a/CHANGELOG.md b/CHANGELOG.md
index 693660b..de9b35a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- 
+### Added
+
+- Releases from v0.4.0 onwards are now archived with a DOI. A badge at the top of the README shows the DOI of the last release. ([@brews](https://github.com/brews), [PR#94](https://github.com/ClimateImpactLab/isku/pull/94))
 
 ## [0.4.0] - 2026-07-24
 
diff --git a/README.md b/README.md
index b0015bd..b158f83 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # isku
 
+[![DOI](https://zenodo.org/badge/1231330187.svg)](https://doi.org/10.5281/zenodo.21540112)
 [![python-test](https://github.com/climateimpactlab/isku/actions/workflows/python-test.yaml/badge.svg)](https://github.com/climateimpactlab/isku/actions/workflows/python-test.yaml)
 [![codecov](https://codecov.io/gh/climateimpactlab/isku/graph/badge.svg?token=G53WDRL97C)](https://codecov.io/gh/climateimpactlab/isku)
 [![Documentation](https://github.com/climateimpactlab/isku/actions/workflows/docs.yml/badge.svg)](https://github.com/climateimpactlab/isku/actions/workflows/docs.yml)