---
 setup.cfg                          |    3 +++
 tests/test_dynamodb_cache.py       |    1 +
 tests/test_interface_uniformity.py |    1 +
 tests/test_redis_cache.py          |    2 +-
 4 files changed, 6 insertions(+), 1 deletion(-)

--- a/setup.cfg
+++ b/setup.cfg
@@ -34,11 +34,14 @@ python_requires = >= 3.7
 where = src
 
 [tool:pytest]
+addopts = --strict-markers
 testpaths = tests
 filterwarnings = 
 	error
 	default::DeprecationWarning:cachelib.uwsgi
 	default::DeprecationWarning:cachelib.redis
+markers =
+	network: mark a test which requires net access
 
 [coverage:run]
 branch = True
--- a/tests/test_dynamodb_cache.py
+++ b/tests/test_dynamodb_cache.py
@@ -29,5 +29,6 @@ def cache_factory(request):
         request.cls.cache_factory = _factory
 
 
+@pytest.mark.network
 class TestDynamoDbCache(CommonTests, ClearTests, HasTests):
     pass
--- a/tests/test_interface_uniformity.py
+++ b/tests/test_interface_uniformity.py
@@ -19,6 +19,7 @@ def create_cache_list(request, tmpdir):
     request.cls.cache_list = [FileSystemCache(tmpdir), mc, rc, SimpleCache()]
 
 
+@pytest.mark.network
 @pytest.mark.usefixtures("redis_server", "memcached_server")
 class TestInterfaceUniformity:
     def test_types_have_all_base_methods(self):