diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f8c6ca..fe1ba2a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ CHANGELOG
 In Development
 --------------
 
+Setup:
+
+* When upgrading from versions before v0.40, setup will now warn that ownCloud/Nextcloud data cannot be migrated rather than failing the installation.
+
 Mail:
 
 * An MTA-STS policy for incoming mail is now published (in DNS and over HTTPS) when the primary hostname and email address domain both have a signed TLS certificate installed, allowing senders to know that an encrypted connection should be enforced.
@@ -20,6 +24,7 @@ TLS:
 
 Control Panel:
 
+* The control panel API is now fully documented at https://mailinabox.email/api-docs.html.
 * User passwords can now have spaces.
 * Status checks for automatic subdomains have been moved into the section for the parent domain.
 * Typo fixed.