diff --git a/CITATION.cff b/CITATION.cff
index 23a06c1..ea86514 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -30,6 +30,7 @@ title: "How to document your research software"
 type: "data"
 abstract: "The lesson 'How to document your research software' gives an overview of the different ways how a code project can be documented: from small projects to larger projects. Markdown and Sphinx are central tools in this lesson."
 version: 2023-08-24
+doi: "https://doi.org/10.5281/zenodo.8280234"
 date-released: 2023-08-24
 url: "https://coderefinery.github.io/documentation/"
 license: CC-BY-4.0