diff --git a/openslides/utils/cache_providers.py b/openslides/utils/cache_providers.py
index f5962bd55..c6445e301 100644
--- a/openslides/utils/cache_providers.py
+++ b/openslides/utils/cache_providers.py
@@ -131,9 +131,17 @@ class RedisCacheProvider:
     async def reset_full_cache(self, data: Dict[str, str]) -> None:
         """
         Deletes the full_data_cache and write new data in it.
+
+        Also deletes the restricted_data_cache and the change_id_cache.
         """
         async with self.get_connection() as redis:
             tr = redis.multi_exec()
+            # like clear_cache but does not delete a lock
+            tr.eval(
+                "return redis.call('del', 'fake_key', unpack(redis.call('keys', ARGV[1])))",
+                keys=[],
+                args=["{}{}*".format(self.prefix, self.restricted_user_cache_key)])
+            tr.delete(self.get_change_id_cache_key())
             tr.delete(self.get_full_data_cache_key())
             tr.hmset_dict(self.get_full_data_cache_key(), data)
             await tr.execute()
diff --git a/tests/conftest.py b/tests/conftest.py
index cc7364fc2..ce27cb14b 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -69,3 +69,6 @@ def reset_cache(request):
     if 'django_db' in request.node.keywords or is_django_unittest(request):
         # When the db is created, use the original cachables
         element_cache.ensure_cache(reset=True)
+
+    # Set constant start_time
+    element_cache.start_time = 1
diff --git a/tests/integration/utils/test_consumers.py b/tests/integration/utils/test_consumers.py
index 66a6c7d18..c342822c6 100644
--- a/tests/integration/utils/test_consumers.py
+++ b/tests/integration/utils/test_consumers.py
@@ -104,7 +104,7 @@ async def test_connection_with_invalid_change_id(get_communicator):
 @pytest.mark.asyncio
 async def test_connection_with_to_big_change_id(get_communicator):
     await set_config('general_system_enable_anonymous', True)
-    communicator = get_communicator('change_id=1000000000000')
+    communicator = get_communicator('change_id=100')
 
     connected, __ = await communicator.connect()
 
@@ -272,7 +272,7 @@ async def test_send_get_elements_to_big_change_id(communicator):
     await set_config('general_system_enable_anonymous', True)
     await communicator.connect()
 
-    await communicator.send_json_to({'type': 'getElements', 'content': {'change_id': 1_000_000_000_000}, 'id': 'test_id'})
+    await communicator.send_json_to({'type': 'getElements', 'content': {'change_id': 100}, 'id': 'test_id'})
     response = await communicator.receive_json_from()
 
     type = response.get('type')
@@ -323,7 +323,7 @@ async def test_send_connect_twice_with_clear_change_id_cache_same_change_id_then
     A client should not do this but request for change_id+1
     """
     await set_config('general_system_enable_anonymous', True)
-    element_cache.cache_provider.change_id_data = {}  # type: ignore
+    await element_cache.cache_provider.clear_cache()
     await communicator.connect()
     await communicator.send_json_to({'type': 'getElements', 'content': {'change_id': 0}, 'id': 'test_id'})
     response1 = await communicator.receive_json_from()
diff --git a/tests/settings.py b/tests/settings.py
index 765edc90e..985b11dec 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -31,6 +31,9 @@ SECRET_KEY = 'secret'
 
 DEBUG = False
 
+# Uncomment to test with the redis cache
+# REDIS_ADDRESS = "redis://127.0.0.1"
+
 
 # Database
 # https://docs.djangoproject.com/en/1.10/ref/settings/#databases