diff --git a/CITATION.cff b/CITATION.cff
index 5b8805a1..84675e26 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -147,3 +147,4 @@ keywords:
 message: If you use this software, please cite it using these metadata.
 title: >-
   HeuDiConv: flexible DICOM conversion into structured directory layouts
+license: Apache-2.0