diff --git a/CITATION.cff b/CITATION.cff
index 66388a8..b5214b3 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -1,4 +1,4 @@
-cff-version: 1.2.0
+cff-version: 1.1.0
 title: Gaspype
 abstract: Gaspype is a performant library for thermodynamic calculations with ideal gases
 authors:
@@ -8,8 +8,8 @@ authors:
     affiliation: "German Aerospace Center (DLR)"
     address: "Linder Höhe"
     city: Köln
-version: 1.1.1
-date-released: "2025-06-17"
+version: v1.1.1
+date-released: "2025-06-18"
 #identifiers:
 #  - description: This is the collection of archived snapshots of all versions of Gaspype
 #    type: doi