diff --git a/CITATION.cff b/CITATION.cff
index 96221bb407817e674769461c8b8d96d64f12578d..dddf5c235cc99f8ed5c38cb41bfff08400f4ae21 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -20,3 +20,4 @@ version: 2022.1
 doi: 10.5281/zenodo.7349787
 date-released: 2022-11-23
 url: "https://github.com/inducer/sumpy"
+license: MIT