diff --git a/paramiko/client.py b/paramiko/client.py
index <HASH>..<HASH> 100644
--- a/paramiko/client.py
+++ b/paramiko/client.py
@@ -313,6 +313,8 @@ class SSHClient (ClosingContextManager):
         .. versionchanged:: 1.15
             Added the ``banner_timeout``, ``gss_auth``, ``gss_kex``,
             ``gss_deleg_creds`` and ``gss_host`` arguments.
+        .. versionchanged:: 2.3
+            Added the ``gss_trust_dns`` argument.
         """
         if not sock:
             errors = {}
diff --git a/paramiko/transport.py b/paramiko/transport.py
index <HASH>..<HASH> 100644
--- a/paramiko/transport.py
+++ b/paramiko/transport.py
@@ -1137,6 +1137,9 @@ class Transport(threading.Thread, ClosingContextManager):
 
         :raises: `.SSHException` -- if the SSH2 negotiation fails, the host key
             supplied by the server is incorrect, or authentication fails.
+
+        .. versionchanged:: 2.3
+            Added the ``gss_trust_dns`` argument.
         """
         if hostkey is not None:
             self._preferred_keys = [hostkey.get_name()]
versionchanged for gss_trust_dns