diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f215f2..f536893 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,18 @@
 
 All notable changes to this project will be documented in this file.
 
+## [4.2.1] - 2026-03-05
+
+### New Features
+
+- **DOMPurify for NomadNet**: Added `dompurify` dependency and global `DOMPurify` in frontend entry so MicronParser sanitizes content when browsing Nomad Network nodes; removes "DOMPurify is not installed" warning in AppImage and packaged builds.
+
+### Improvements
+
+- **Micron editor**: Button label changed from "Download" to "Save" on the micron editor page (en: Save; de: Speichern; it: Salva; ru: Сохранить).
+- **Release workflow**: Include `meshchatx-frontend.zip` in release assets (was generated and checksummed but not uploaded). Add Linux arm64 build step (AppImage + deb) via `dist:linux-arm64`. Release `files` list now includes `*.zip`.
+- **Community interfaces**: Replaced RNS Testnet Amsterdam and BetweenTheBorders with Quad4 hub (62.151.179.77:45657 TCP). Removed outbound health checks: suggested community interfaces are now a static list with no TCP probes to the internet.
+
 ## [4.2.0] - 2026-03-05
 
 ### New Features