diff --git a/CITATION.cff b/CITATION.cff
index c6497415..776e3e55 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -2,9 +2,9 @@ cff-version: 1.2.0
 message: "If you use this software for a scientific publication, please cite it as below."
 title: MOPAC
 type: software
-version: 22.1.0
+version: 22.1.1
 doi: 10.5281/zenodo.6511958
-date-released: 2023-09-25
+date-released: 2024-01-29
 authors:
   - family-names: Moussa
     given-names: "Jonathan E."