diff --git a/CHANGELOG.md b/CHANGELOG.md
index b82ffab..e6476af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+## 2023-11-27 - Release 4.1.0
+
+### Fixed
+
+- A long standing bug where the generation of entries in the authinfo file used the wrong quotes has been fixed.
+
+### Enhancements
+
+- The defined type `sendmail::mc::feature` now accepts `undef` elements for the `args` array. They translate into empty parameters (e.g. two consecutive commas in the `m4` code).
+
 ## 2023-08-10 - Release 4.0.0
 
 ### Breaking changes
diff --git a/metadata.json b/metadata.json
index 5c41d2b..71c9ec0 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,6 +1,6 @@
 {
   "name": "stm-sendmail",
-  "version": "4.0.0",
+  "version": "4.1.0",
   "author": "stm",
   "summary": "Install and manage the Sendmail MTA.",
   "license": "BSD-2-Clause",