diff --git a/CITATION.cff b/CITATION.cff
index eb1afa0..bd36f5a 100755
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -15,9 +15,9 @@ authors:
     affiliation: "ZBW - Leibniz Information Centre for Economics"
 title: "stwfsapy (a library for matching labels of thesaurus concepts via finite-state automata)"
 abstract: "This library provides functionality to find the labels of SKOS thesaurus concepts in text. A deterministic finite automaton is constructed from the labels of the thesaurus concepts to perform the matching. In addition, a classifier is trained to score the matched concept occurrences."
-version: 0.5.0
+version: 0.5.1
 license: Apache-2.0
-date-released: 2024-08-29
+date-released: 2024-10-09
 repository-code: "https://github.com/zbw/stwfsapy"
 contact:
   - name: "Automatization of subject indexing using methods from artificial intelligence (AutoSE)"
diff --git a/pyproject.toml b/pyproject.toml
index a2e30cd..37074c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "stwfsapy"
-version = "0.5.0"
+version = "0.5.1"
 description = "A library for match labels of thesaurus concepts to text and assigning scores to found occurrences."
 authors = ["AutoSE <autose@zbw.eu>"]
 license = "Apache-2.0"