diff --git a/discordbot/__init__.py b/discordbot/__init__.py
index 61cf539..34a4789 100644
--- a/discordbot/__init__.py
+++ b/discordbot/__init__.py
@@ -30,11 +30,12 @@ from discordbot.patreon import checkPatreonPosts
 from discordbot.youtube import checkYouTubeVideos
 from discordbot.auto_rooms import on_voice_state_update_auto_rooms, on_raw_reaction_add_auto_rooms, on_message_auto_rooms, cleanup_orphaned_auto_rooms
 from discordbot.member_stats import record_message, on_voice_state_update_track_voice
+from discordbot.rate_limit_logging import build_discord_http_trace_config
 from protondb import searhProtonDb
 
 class DiscordBot(discord.Client):
 	def __init__(self, *, intents: discord.Intents):
-		super().__init__(intents=intents)
+		super().__init__(intents=intents, http_trace=build_discord_http_trace_config())
 		self.tree = app_commands.CommandTree(self)
 		self.synced = False
 	
diff --git a/discordbot/rate_limit_logging.py b/discordbot/rate_limit_logging.py
new file mode 100644
index 0000000..b42f8ee
--- /dev/null
+++ b/discordbot/rate_limit_logging.py
@@ -0,0 +1,67 @@
+"""
+Journalisation des en-têtes HTTP sur les réponses 429 (rate limit Discord).
+
+Réf. Discord : https://support-dev.discord.com/hc/en-us/articles/6223003921559-My-Bot-is-Being-Rate-Limited
+
+discord.py transmet ce TraceConfig aiohttp via l’option Client(http_trace=...).
+Le corps JSON (retry_after, global) est toujours loggé par le logger discord.http.
+"""
+import logging
+from typing import Any
+
+import aiohttp
+
+logger = logging.getLogger('discord.ratelimit_headers')
+
+# En-têtes utiles pour identifier le type de limite (global / user / shared, etc.)
+_HEADER_KEYS = (
+	'X-RateLimit-Limit',
+	'X-RateLimit-Remaining',
+	'X-RateLimit-Reset',
+	'X-RateLimit-Reset-After',
+	'X-RateLimit-Scope',
+	'X-Ratelimit-Bucket',
+	'X-Ratelimit-Limit',
+	'X-Ratelimit-Remaining',
+	'X-Ratelimit-Reset',
+	'Retry-After',
+	'Via',
+)
+
+
+def _collect_headers(resp: aiohttp.ClientResponse) -> dict[str, str]:
+	h = resp.headers
+	out: dict[str, str] = {}
+	for key in _HEADER_KEYS:
+		val = h.get(key)
+		if val is not None:
+			out[key] = val
+	return out
+
+
+def build_discord_http_trace_config() -> aiohttp.TraceConfig:
+	trace = aiohttp.TraceConfig()
+
+	async def on_request_end(
+		session: aiohttp.ClientSession,
+		trace_config_ctx: Any,
+		params: Any,
+	) -> None:
+		try:
+			resp = getattr(params, 'response', None)
+			if resp is None or getattr(resp, 'status', None) != 429:
+				return
+			method = getattr(params, 'method', '?')
+			url = getattr(params, 'url', '?')
+			hdr = _collect_headers(resp)
+			logger.warning(
+				'Discord API 429 %s %s | rate_limit_headers=%s',
+				method,
+				url,
+				hdr,
+			)
+		except Exception:
+			logger.debug('rate_limit trace callback failed', exc_info=True)
+
+	trace.on_request_end.append(on_request_end)
+	return trace
diff --git a/run-web.py b/run-web.py
index b407ee0..291d658 100644
--- a/run-web.py
+++ b/run-web.py
@@ -55,6 +55,8 @@ if __name__ == '__main__':
     # Calmer les logs verbeux de certaines libs si besoin
     logging.getLogger('werkzeug').setLevel(logging.WARNING)
     logging.getLogger('discord').setLevel(logging.WARNING)
+    # 429 : en-têtes X-RateLimit-* (voir discordbot/rate_limit_logging.py + doc Discord rate limits)
+    logging.getLogger('discord.ratelimit_headers').setLevel(logging.WARNING)
 
     # Hook exceptions non-capturées (threads inclus)
     def _log_uncaught(exc_type, exc, tb):