diff --git a/docs/releasenotes.rst b/docs/releasenotes.rst
index d229b0f173732cbf57b83d5751588b49ee7fec6d..19d3015c7d0c911855736c6123bc09fff3ee971e 100644
--- a/docs/releasenotes.rst
+++ b/docs/releasenotes.rst
@@ -42,6 +42,10 @@ Dropped support for Debian 10 (Buster).
     parameter expects a list of IPv4 and IPv6 addresses (or
     subnets). Resolvable names can no longer be specified.
 
+  * NTP server configuration is now based on use of pools instead of
+    servers. Parameter ``ntp_servers`` has been deprecated and
+    replaced with parameter ``ntp_pools``.
+
 * ``mail_server`` role
 
   * Parameter ``mail_server_tls_protocols`` has been dropped and