diff --git a/services/web/server/tests/unit/with_dbs/01/test_api_keys.py b/services/web/server/tests/unit/with_dbs/01/test_api_keys.py
index b850a84ae85f..aa6d4621209b 100644
--- a/services/web/server/tests/unit/with_dbs/01/test_api_keys.py
+++ b/services/web/server/tests/unit/with_dbs/01/test_api_keys.py
@@ -3,7 +3,6 @@
 # pylint: disable=unused-variable
 # pylint: disable=too-many-arguments
 
-import asyncio
 from collections.abc import AsyncIterable
 from datetime import timedelta
 from http import HTTPStatus
@@ -29,7 +28,12 @@
 )
 from simcore_service_webserver.application_settings import GarbageCollectorSettings
 from simcore_service_webserver.db.models import UserRole
-from tenacity import retry_if_exception_type, stop_after_attempt, wait_fixed
+from tenacity import (
+    retry_if_exception_type,
+    stop_after_attempt,
+    stop_after_delay,
+    wait_fixed,
+)
 
 
 @pytest.fixture
@@ -172,9 +176,15 @@ async def test_create_api_key_with_expiration(
         assert [d["displayName"] for d in data] == ["foo"]
 
         # wait for api-key for it to expire and force-run scheduled task
-        await asyncio.sleep(expiration_interval.seconds)
-        deleted = await prune_expired_api_keys(client.app)
-        assert deleted == ["foo"]
+        async for attempt in tenacity.AsyncRetrying(
+            wait=wait_fixed(1),
+            retry=retry_if_exception_type(AssertionError),
+            stop=stop_after_delay(5 * expiration_interval.seconds),
+            reraise=True,
+        ):
+            with attempt:
+                deleted = await prune_expired_api_keys(client.app)
+                assert deleted == ["foo"]
 
         resp = await client.get("/v0/auth/api-keys")
         data, _ = await assert_status(resp, expected)
diff --git a/services/web/server/tests/unit/with_dbs/02/test_projects_repository.py b/services/web/server/tests/unit/with_dbs/02/test_projects_repository.py
index 4141f9527965..da2307578a65 100644
--- a/services/web/server/tests/unit/with_dbs/02/test_projects_repository.py
+++ b/services/web/server/tests/unit/with_dbs/02/test_projects_repository.py
@@ -3,7 +3,7 @@
 # pylint: disable=unused-variable
 # pylint: disable=too-many-arguments
 
-from datetime import timedelta
+from datetime import datetime, timedelta
 from uuid import UUID
 
 import arrow
@@ -55,7 +55,9 @@ async def test_patch_project(
     assert client.app
 
     # This will change after in patched_project
-    assert user_project["creationDate"] == user_project["lastChangeDate"]
+    creation_date = datetime.fromisoformat(user_project["creationDate"])
+    last_change_date = datetime.fromisoformat(user_project["lastChangeDate"])
+    assert abs(creation_date - last_change_date) < timedelta(seconds=1)
 
     # Patch valid project
     patch_data = {"name": "Updated Project Name"}