diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7918d810..734b8919 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -65,6 +65,8 @@ The most noteworthy change of this release is the update of the container's base
 - **Environment Variables:**
   - `ONE_DIR` has been removed (legacy ENV) ([#3840](https://github.com/docker-mailserver/docker-mailserver/pull/3840))
     - It's only functionality remaining was to opt-out of run-time state consolidation with `ONE_DIR=0` (_when a volume was already mounted to `/var/mail-state`_).
+- **Internal:**
+  - Used a more updated version of `whitelist_clients` directly from `postgrey`'s GitHub repository https://github.com/schweikert/postgrey, rather than from its website https://postgrey.schweikert.ch.
 - **Tests:**
   - Refactored helper methods for sending e-mails with specific `Message-ID` headers and the helpers for retrieving + filtering logs, which together help isolate logs relevant to specific mail when multiple mails have been processed within a single test. ([#3786](https://github.com/docker-mailserver/docker-mailserver/pull/3786))
 - **Rspamd**: