diff --git a/CITATION.cff b/CITATION.cff
index 93febb4b4..2a7a07d64 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -27,3 +27,4 @@ version: 0.1
 date-released: 2022-03-28
 url: "https://openfree.energy/"
 repository-code: "https://github.com/openfreeEnergy/openfe"
+doi: 10.5281/zenodo.8344248