diff --git a/tests/pubsub/test_dummyaccount_demo.py b/tests/pubsub/test_dummyaccount_demo.py
index 6a604e54..b365134f 100644
--- a/tests/pubsub/test_dummyaccount_demo.py
+++ b/tests/pubsub/test_dummyaccount_demo.py
@@ -189,6 +189,7 @@ async def test_set_then_send_from_diff_nodes_five_nodes_ring_topography():
 
 
 @pytest.mark.asyncio
+@pytest.mark.slow
 async def test_set_then_send_from_five_diff_nodes_five_nodes_ring_topography():
     num_nodes = 5
     adj_map = {0: [1], 1: [2], 2: [3], 3: [4], 4: [0]}
diff --git a/tests/pubsub/test_floodsub.py b/tests/pubsub/test_floodsub.py
index c6599293..0a67c654 100644
--- a/tests/pubsub/test_floodsub.py
+++ b/tests/pubsub/test_floodsub.py
@@ -87,5 +87,6 @@ async def test_lru_cache_two_nodes(pubsubs_fsub, monkeypatch):
 
 @pytest.mark.parametrize("test_case_obj", floodsub_protocol_pytest_params)
 @pytest.mark.asyncio
+@pytest.mark.slow
 async def test_gossipsub_run_with_floodsub_tests(test_case_obj):
     await perform_test_from_obj(test_case_obj, FloodsubFactory)
diff --git a/tests/pubsub/test_gossipsub.py b/tests/pubsub/test_gossipsub.py
index 83ab7868..e091f669 100644
--- a/tests/pubsub/test_gossipsub.py
+++ b/tests/pubsub/test_gossipsub.py
@@ -268,6 +268,7 @@ async def test_fanout(hosts, pubsubs_gsub):
 
 @pytest.mark.parametrize("num_hosts", (10,))
 @pytest.mark.asyncio
+@pytest.mark.slow
 async def test_fanout_maintenance(hosts, pubsubs_gsub):
     num_msgs = 5
 
diff --git a/tests/pubsub/test_gossipsub_backward_compatibility.py b/tests/pubsub/test_gossipsub_backward_compatibility.py
index 05b6c402..e76ce049 100644
--- a/tests/pubsub/test_gossipsub_backward_compatibility.py
+++ b/tests/pubsub/test_gossipsub_backward_compatibility.py
@@ -17,6 +17,7 @@ async def test_gossipsub_initialize_with_floodsub_protocol():
 
 @pytest.mark.parametrize("test_case_obj", floodsub_protocol_pytest_params)
 @pytest.mark.asyncio
+@pytest.mark.slow
 async def test_gossipsub_run_with_floodsub_tests(test_case_obj):
     await perform_test_from_obj(
         test_case_obj,