diff --git a/CITATION.cff b/CITATION.cff
index 2ce3151c..c2fd6393 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -43,4 +43,5 @@ abstract:
 
   The work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - 460197019 (FAIRmat)
   (https://gepris.dfg.de/gepris/projekt/460197019?language=en).
-license: Apache-2.0
\ No newline at end of file
+license: Apache-2.0
+version: 0.4.2
\ No newline at end of file