diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66f5dffe56d7874ac81eaaa95e753147b3e98057..303949c8f2b4efc9503eaae752329ee04db67f50 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 ### Security
 
+## [1.1.1] - 2021-08-04
+### Changed
+- Use C-Service ServiceWorker v1.2.1
+
 ## [1.1.0] - 2021-07-22
 ### Added