diff --git a/services/worker-indexer/Dockerfile b/services/worker-indexer/Dockerfile
index d354018..fa67137 100644
--- a/services/worker-indexer/Dockerfile
+++ b/services/worker-indexer/Dockerfile
@@ -13,8 +13,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 WORKDIR /app
 
 COPY requirements.txt .
-# --timeout/--retries: канал до pypi медленный и флоки, без этого сборка падает
-RUN pip install --no-cache-dir --timeout 120 --retries 10 -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
 
 COPY . .
 
diff --git a/services/worker-indexer/app/tasks/index.py b/services/worker-indexer/app/tasks/index.py
index 3e99f8a..1939558 100644
--- a/services/worker-indexer/app/tasks/index.py
+++ b/services/worker-indexer/app/tasks/index.py
@@ -7,6 +7,7 @@ from typing import Any
 
 from celery.utils.log import get_task_logger
 from sqlalchemy import func, select
+from sqlalchemy.exc import IntegrityError
 
 from app.algorithms.minhash import add_to_lsh, find_similar
 from app.algorithms.winnowing import winnow
@@ -299,7 +300,16 @@ def add_document(doc_data: dict[str, Any], dispatch_embed: bool = True) -> dict[
 
         doc = Document(**doc_kwargs)
         session.add(doc)
-        session.flush()
+        try:
+            session.flush()
+        except IntegrityError:
+            # Гонка: другой воркер параллельно вставил этот ext_id между нашей
+            # проверкой existing и flush. Уникальный индекс отработал — это дубль.
+            session.rollback()
+            existing = session.execute(
+                select(Document).where(Document.ext_id == ext_id)
+            ).scalar_one_or_none()
+            return {"status": "duplicate", "doc_id": existing.id if existing else None}
         doc_id = doc.id
 
         # Вычислить fingerprints