Update CHANGELOG.md

Author: nilmerg

Diff for: CHANGELOG.md

@@ -3,6 +3,11 @@
 Please make sure to always read our [Upgrading](https://icinga.com/docs/icinga-db-web/latest/doc/05-Upgrading/)
 documentation before switching to a new version.
 
+## 1.1.1 (2023-11-15)
+
+Included changes can be found on the milestone: https://github.com/Icinga/icingadb-web/milestone/5?closed=1
+And a detailed description about the most important ones on our blog: https://icinga.com/blog/2023/11/16/releasing-icinga-db-web-v1-1-1-and-icinga-web-2-12-1/
+
 ## 1.1.0 (2023-09-28)
 
 Included changes can be found on the milestone: https://github.com/Icinga/icingadb-web/milestone/2?closed=1