diff --git a/CHANGELOG.md b/CHANGELOG.md
index de8fe98..853fcc2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [not yet released]
+- no changes yet
+
+## 2023-11-16 - release 1.1.1
 - fix mvn central name and description
 - update the carbon dioxide factor in the default configuration to the latest published value for Germany (2022)
 
diff --git a/version.txt b/version.txt
index bc5594a..524cb55 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.1.1-SNAPSHOT
+1.1.1