diff --git a/CHANGELOG.md b/CHANGELOG.md
index e66464b..bf8c2ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,7 @@ list yields a list of all related PRs for each release.
 
 # [unreleased]
 
-# [v3.2.0] to be released
+# [v4.0.0] 2023-06-10
 
 `tmtccmd` version: v5.0.0rc0