diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f6fa3f..391d3e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## stable-5142-1
 
+**Important:** This release includes 2 major changes: migrating the base image to Debian Buster and replacing certbot with acme.sh for getting Letś Encrypt certificates. Please report any problems you find!
+
 Based on stable release 5142-1.
 
 * b0cb4a1 web: update TLS config to Mozilla security guidelines