diff --git a/CHANGELOG.md b/CHANGELOG.md
index e4afc34b..d17e365c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,7 +22,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - [591](https://github.com/thoth-pub/thoth/pull/591) - Upgrade `graphiql` to v3.2
   - [591](https://github.com/thoth-pub/thoth/pull/591) - Upgrade `trunk` to v0.19.2
   - [591](https://github.com/thoth-pub/thoth/pull/591) - Upgrade `wasm-bindgen` to v0.2.92
-  - [218](https://github.com/thoth-pub/thoth/issues/218) - Make series ISSN optional
 
 ### Fixed
   - [591](https://github.com/thoth-pub/thoth/pull/591) - Replaced broken logo URL in export API docs