diff --git a/tradein-mvp/backend/tests/test_city_sweep.py b/tradein-mvp/backend/tests/test_city_sweep.py
index 3bc76100..7df1dd9c 100644
--- a/tradein-mvp/backend/tests/test_city_sweep.py
+++ b/tradein-mvp/backend/tests/test_city_sweep.py
@@ -9,11 +9,11 @@ import os
 
 os.environ.setdefault("DATABASE_URL", "postgresql+psycopg://test:test@localhost:5432/test")
 
+from datetime import UTC
 from unittest.mock import AsyncMock, MagicMock, patch
 
 import pytest
 
-
 # ── EKB_ANCHORS ────────────────────────────────────────────────────────────
 
 
@@ -53,9 +53,10 @@ def test_city_sweep_counters_to_dict() -> None:
 
 
 def test_city_sweep_counters_to_dict_all_keys() -> None:
-    from app.services.scrape_pipeline import CitySweepCounters
     from dataclasses import fields
 
+    from app.services.scrape_pipeline import CitySweepCounters
+
     c = CitySweepCounters()
     d = c.to_dict()
     expected_keys = {f.name for f in fields(c)}
@@ -174,7 +175,8 @@ def test_start_endpoint_validates_request_delay_too_low(app_with_admin) -> None:
 def test_start_endpoint_ok(app_with_admin) -> None:
     """Valid request → 200, run_id в ответе."""
     with (
-        patch("app.services.scrape_runs.create_run", return_value=7) as mock_create,
+        patch("app.api.v1.admin.has_running_run", return_value=False),
+        patch("app.services.scrape_runs.create_run", return_value=7),
         patch("app.services.scrape_pipeline.run_avito_city_sweep", new_callable=AsyncMock),
     ):
         r = app_with_admin.post(
@@ -209,7 +211,7 @@ def test_cancel_endpoint_not_running(app_with_admin) -> None:
 
 def test_list_runs_endpoint(app_with_admin) -> None:
     """List runs endpoint возвращает список."""
-    from datetime import datetime, timezone
+    from datetime import datetime
 
     fake_rows = [
         {
@@ -219,9 +221,9 @@ def test_list_runs_endpoint(app_with_admin) -> None:
             "params": {"pages_per_anchor": 3},
             "counters": {"lots_fetched": 300},
             "error": None,
-            "started_at": datetime(2025, 1, 1, tzinfo=timezone.utc),
-            "finished_at": datetime(2025, 1, 1, 1, tzinfo=timezone.utc),
-            "heartbeat_at": datetime(2025, 1, 1, 1, tzinfo=timezone.utc),
+            "started_at": datetime(2025, 1, 1, tzinfo=UTC),
+            "finished_at": datetime(2025, 1, 1, 1, tzinfo=UTC),
+            "heartbeat_at": datetime(2025, 1, 1, 1, tzinfo=UTC),
         }
     ]
     with patch("app.services.scrape_runs.list_recent", return_value=fake_rows):
diff --git a/tradein-mvp/backend/tests/test_sweep_imv_phase.py b/tradein-mvp/backend/tests/test_sweep_imv_phase.py
index fd6311ab..c17a27d6 100644
--- a/tradein-mvp/backend/tests/test_sweep_imv_phase.py
+++ b/tradein-mvp/backend/tests/test_sweep_imv_phase.py
@@ -443,6 +443,7 @@ def test_city_sweep_start_request_enrich_imv_false() -> None:
 def test_sweep_endpoint_passes_enrich_imv(app_with_admin) -> None:
     """POST /scrape/avito-city-sweep с enrich_imv=False → sweep вызывается без IMV."""
     with (
+        patch("app.api.v1.admin.has_running_run", return_value=False),
         patch("app.services.scrape_runs.create_run", return_value=42),
         patch(
             "app.services.scrape_pipeline.run_avito_city_sweep",