diff --git a/CHANGELOG.md b/CHANGELOG.md
index c594580..d6642c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,10 +5,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-* Updated [`h2`](https://github.com/hyperium/h2) from 0.3.16 to 0.3.17 ([#599])
+* Updated [`h2`](https://github.com/hyperium/h2) from 0.3.16 to 0.3.17, fixes [SEC#11] ([#599])
 
 [#599]: https://github.com/vbrandl/hoc/pull/599
 
+[SEC#11]: https://github.com/vbrandl/hoc/security/dependabot/11
+
 
 ## [0.34.0] 2023-04-13