diff --git a/apps/stalwart/README.md b/apps/stalwart/README.md
index 338d432..3df5d19 100644
--- a/apps/stalwart/README.md
+++ b/apps/stalwart/README.md
@@ -61,3 +61,7 @@ Data is stored in `/var/lib/stalwart` using the RocksDB database format. This in
 - User accounts
 - Server configuration
 - TLS certificates configuration
+
+## Certificate Renewal
+
+Refer to [Automatic Renewal TLS Certificate](CERTIFICATE-RENEWAL.md)