diff --git a/backend/src/utils/jobs.py b/backend/src/utils/jobs.py
index c80876b..5c31db3 100644
--- a/backend/src/utils/jobs.py
+++ b/backend/src/utils/jobs.py
@@ -1,4 +1,5 @@
 import json
+from datetime import timedelta
 from typing import Any
 
 import asyncpg
@@ -7,15 +8,22 @@ JOBS_CHANGED_CHANNEL = "jobs_changed"
 
 
 async def enqueue(
-    pool: asyncpg.Pool, account_id: int, kind: str, params: dict[str, Any]
+    pool: asyncpg.Pool,
+    account_id: int,
+    kind: str,
+    params: dict[str, Any],
+    *,
+    cooldown: timedelta | None = None,
 ) -> int:
     params_json = json.dumps(params)
     existing = await pool.fetchval(
         "SELECT id FROM jobs WHERE account_id = $1 AND kind = $2 "
-        "AND params = $3::jsonb AND status IN ('pending', 'running') LIMIT 1",
+        "AND params = $3::jsonb AND (status IN ('pending', 'running') "
+        "OR created_at > now() - $4::interval) LIMIT 1",
         account_id,
         kind,
         params_json,
+        cooldown,
     )
     if existing is not None:
         return existing
diff --git a/backend/src/watcher/registry.py b/backend/src/watcher/registry.py
index 8e01163..49befa8 100644
--- a/backend/src/watcher/registry.py
+++ b/backend/src/watcher/registry.py
@@ -1,6 +1,7 @@
 import asyncio
 import contextlib
 from dataclasses import dataclass
+from datetime import timedelta
 
 import asyncpg
 from pyrogram import Client, enums
@@ -30,6 +31,7 @@ TOKEN_MISSING = "Токен не найден на диске"  # noqa: S105
 INVALID_TOKEN_ERRORS = ("ACCESS_TOKEN_INVALID", "ACCESS_TOKEN_EXPIRED")
 BACKLOG_ATTEMPTS = 3
 BACKLOG_RETRY_PAUSE = 60
+ENRICH_COOLDOWN = timedelta(hours=6)
 
 
 @dataclass
@@ -70,14 +72,24 @@ def _handlers(pool: asyncpg.Pool) -> tuple:
         )
         if message.chat.type is not enums.ChatType.PRIVATE:
             await enqueue(
-                pool, ctx.account_id, "enrich_chat", {"chat_id": meta.chat_id}
+                pool,
+                ctx.account_id,
+                "enrich_chat",
+                {"chat_id": meta.chat_id},
+                cooldown=ENRICH_COOLDOWN,
             )
 
     async def on_member(client: Client, update) -> None:  # noqa: ANN001
         ctx = getattr(client, "capture", None)
         if ctx is None or update.chat is None:
             return
-        await enqueue(pool, ctx.account_id, "enrich_chat", {"chat_id": update.chat.id})
+        await enqueue(
+            pool,
+            ctx.account_id,
+            "enrich_chat",
+            {"chat_id": update.chat.id},
+            cooldown=ENRICH_COOLDOWN,
+        )
 
     return (
         MessageHandler(on_message),