diff --git a/discord/abc.py b/discord/abc.py
index af2b15dac..891404b33 100644
--- a/discord/abc.py
+++ b/discord/abc.py
@@ -26,6 +26,7 @@ from __future__ import annotations
 
 import copy
 import time
+import secrets
 import asyncio
 from datetime import datetime
 from typing import (
@@ -1614,6 +1615,9 @@ class Messageable:
         else:
             flags = MISSING
 
+        if nonce is None:
+            nonce = secrets.randbits(64)
+
         with handle_message_parameters(
             content=content,
             tts=tts,
diff --git a/discord/http.py b/discord/http.py
index fbaf447aa..c66132055 100644
--- a/discord/http.py
+++ b/discord/http.py
@@ -197,6 +197,7 @@ def handle_message_parameters(
 
     if nonce is not None:
         payload['nonce'] = str(nonce)
+        payload['enforce_nonce'] = True
 
     if message_reference is not MISSING:
         payload['message_reference'] = message_reference