diff --git a/_build/update_release_notes.py b/_build/update_release_notes.py
index 435711a..5a3d9fa 100644
--- a/_build/update_release_notes.py
+++ b/_build/update_release_notes.py
@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import json
 import sys
+import urllib.error
 import urllib.request
 from pathlib import Path
 
@@ -44,9 +45,22 @@ def main() -> int:
         print("  [失败] 没拿到 id")
         return 1
 
-    updated = call(f"{API}/releases/{rid}",
-                   {"access_token": TOKEN, "name": f"ykxmz {TAG.lstrip(chr(118))}",
-                    "body": body, "prerelease": False}, method="PATCH")
+    # Gitee 的 PATCH 需要 tag_name + target_commitish，光给 body 会 400
+    payload = {
+        "access_token": TOKEN,
+        "tag_name": TAG,
+        "name": f"ykxmz {TAG.lstrip(chr(118))}",
+        "body": body,
+        "prerelease": False,
+        "target_commitish": "main",
+    }
+    try:
+        updated = call(f"{API}/releases/{rid}", payload, method="PATCH")
+    except urllib.error.HTTPError as exc:
+        detail = exc.read().decode("utf-8", "replace")[:300]
+        print(f"  PATCH 失败 HTTP {exc.code}: {detail}")
+        print("  改用 PUT 再试…")
+        updated = call(f"{API}/releases/{rid}", payload, method="PUT")
     print("\n  更新后的说明：")
     for line in (updated.get("body") or "").splitlines():
         print(f"    {line}")