diff --git a/main.py b/main.py
index a05ffd7..334796f 100644
--- a/main.py
+++ b/main.py
@@ -801,12 +801,23 @@ async def handle_pr_synchronize(payload: dict[str, Any]) -> None:
         return
     author_login = (pull_request.get("user") or {}).get("login") or ""
     msg = f"В PR {repo_full_name}#{pr_number} добавлены новые коммиты (автор: {author_login})."
-    for chat_id in await get_pr_participant_chat_ids(
+    recipient_chat_ids = await get_pr_participant_chat_ids(
         repo_full_name,
         int(pr_number),
         pull_request=pull_request,
         exclude_login=author_login,
-    ):
+    )
+    if not recipient_chat_ids:
+        log_warn(
+            f"[notify] synchronize без получателей для {repo_full_name}#{pr_number}. "
+            f"author={author_login}"
+        )
+        return
+    log_info(
+        f"[notify] synchronize для {repo_full_name}#{pr_number}, "
+        f"получателей={len(recipient_chat_ids)}"
+    )
+    for chat_id in recipient_chat_ids:
         await telegram_client.send_message(chat_id, msg)
 
 
@@ -993,7 +1004,7 @@ async def gitea_webhook(
                 await handle_pull_request_comment(payload)
             elif action in ("closed", "merged"):
                 await handle_pr_closed(payload)
-            elif action == "synchronize":
+            elif action in ("synchronize", "synchronized"):
                 await handle_pr_synchronize(payload)
             elif action == "reviewed" and payload.get("review"):
                 await handle_pr_reviewed(payload)