diff --git a/examples/debugging/fast_error_in_root_after_spawn.py b/examples/debugging/fast_error_in_root_after_spawn.py
index 5c2fdce2..a3953d36 100644
--- a/examples/debugging/fast_error_in_root_after_spawn.py
+++ b/examples/debugging/fast_error_in_root_after_spawn.py
@@ -35,7 +35,7 @@ async def open_ctx(
         assert first is None
 
 
-async def main():
+async def main() -> None:
 
     async with tractor.open_nursery(
         debug_mode=True,
diff --git a/examples/debugging/multi_daemon_subactors.py b/examples/debugging/multi_daemon_subactors.py
index e313803a..95822f93 100644
--- a/examples/debugging/multi_daemon_subactors.py
+++ b/examples/debugging/multi_daemon_subactors.py
@@ -20,7 +20,7 @@ async def name_error():
     getattr(doggypants)  # noqa
 
 
-async def main():
+async def main() -> None:
     '''
     Test breakpoint in a streaming actor.
 
diff --git a/examples/debugging/multi_nested_subactors_error_up_through_nurseries.py b/examples/debugging/multi_nested_subactors_error_up_through_nurseries.py
index 9929b498..2895f0e6 100644
--- a/examples/debugging/multi_nested_subactors_error_up_through_nurseries.py
+++ b/examples/debugging/multi_nested_subactors_error_up_through_nurseries.py
@@ -63,7 +63,7 @@ async def spawn_until(depth=0):
 
 
 # TODO: notes on the new boxed-relayed errors through proxy actors
-async def main():
+async def main() -> None:
     """The main ``tractor`` routine.
 
     The process tree should look as approximately as follows when the debugger
diff --git a/examples/debugging/multi_subactor_root_errors.py b/examples/debugging/multi_subactor_root_errors.py
index 5aa3a4ff..b934c515 100644
--- a/examples/debugging/multi_subactor_root_errors.py
+++ b/examples/debugging/multi_subactor_root_errors.py
@@ -23,7 +23,7 @@ async def spawn_error():
         )
 
 
-async def main():
+async def main() -> None:
     """The main ``tractor`` routine.
 
     The process tree should look as approximately as follows:
diff --git a/examples/debugging/multi_subactors.py b/examples/debugging/multi_subactors.py
index 63ab5404..f2ea18c9 100644
--- a/examples/debugging/multi_subactors.py
+++ b/examples/debugging/multi_subactors.py
@@ -25,7 +25,7 @@ async def spawn_error():
         )
 
 
-async def main():
+async def main() -> None:
     """The main ``tractor`` routine.
 
     The process tree should look as approximately as follows:
diff --git a/examples/debugging/per_actor_debug.py b/examples/debugging/per_actor_debug.py
index 189fb45e..c5abe450 100644
--- a/examples/debugging/per_actor_debug.py
+++ b/examples/debugging/per_actor_debug.py
@@ -5,7 +5,7 @@ async def die():
     raise RuntimeError
 
 
-async def main():
+async def main() -> None:
     async with tractor.open_nursery() as an:
 
         debug_actor = await an.start_actor(
diff --git a/examples/debugging/pm_in_subactor.py b/examples/debugging/pm_in_subactor.py
index a8f5048e..a9728a6b 100644
--- a/examples/debugging/pm_in_subactor.py
+++ b/examples/debugging/pm_in_subactor.py
@@ -18,7 +18,7 @@ async def name_error(
         raise
 
 
-async def main():
+async def main() -> None:
     '''
     Test 3 `PdbREPL` entries:
       - one in the child due to manual `.post_mortem()`,
diff --git a/examples/debugging/root_actor_breakpoint.py b/examples/debugging/root_actor_breakpoint.py
index 55b4ca56..347123ef 100644
--- a/examples/debugging/root_actor_breakpoint.py
+++ b/examples/debugging/root_actor_breakpoint.py
@@ -2,7 +2,7 @@ import trio
 import tractor
 
 
-async def main():
+async def main() -> None:
 
     async with tractor.open_root_actor(
         debug_mode=True,
diff --git a/examples/debugging/root_actor_error.py b/examples/debugging/root_actor_error.py
index fab46335..49359f16 100644
--- a/examples/debugging/root_actor_error.py
+++ b/examples/debugging/root_actor_error.py
@@ -2,7 +2,7 @@ import trio
 import tractor
 
 
-async def main():
+async def main() -> None:
     async with tractor.open_root_actor(
         debug_mode=True,
     ):
diff --git a/examples/debugging/root_cancelled_but_child_is_in_tty_lock.py b/examples/debugging/root_cancelled_but_child_is_in_tty_lock.py
index 75e1c9a4..ca15530b 100644
--- a/examples/debugging/root_cancelled_but_child_is_in_tty_lock.py
+++ b/examples/debugging/root_cancelled_but_child_is_in_tty_lock.py
@@ -27,7 +27,7 @@ async def spawn_until(depth=0):
             )
 
 
-async def main():
+async def main() -> None:
     '''
     The process tree should look as approximately as follows when the
     debugger first engages:
diff --git a/examples/debugging/root_self_cancelled_w_error.py b/examples/debugging/root_self_cancelled_w_error.py
index b3c15288..e5ebbacc 100644
--- a/examples/debugging/root_self_cancelled_w_error.py
+++ b/examples/debugging/root_self_cancelled_w_error.py
@@ -2,7 +2,7 @@ import trio
 import tractor
 
 
-async def main():
+async def main() -> None:
     async with tractor.open_root_actor(
         debug_mode=True,
         loglevel='cancel',
diff --git a/examples/debugging/root_timeout_while_child_crashed.py b/examples/debugging/root_timeout_while_child_crashed.py
index 043cb5c7..11533a8e 100644
--- a/examples/debugging/root_timeout_while_child_crashed.py
+++ b/examples/debugging/root_timeout_while_child_crashed.py
@@ -7,7 +7,7 @@ async def key_error():
     return {}['doggy']
 
 
-async def main():
+async def main() -> None:
     '''
     Root is fail-after-cancelled while blocking and child RPC fails
     simultaneously.
diff --git a/examples/debugging/shielded_pause.py b/examples/debugging/shielded_pause.py
index 5a8c50e7..cfa8f4f8 100644
--- a/examples/debugging/shielded_pause.py
+++ b/examples/debugging/shielded_pause.py
@@ -71,7 +71,7 @@ async def cancelled_before_pause(
     await pm_on_cancelled()
 
 
-async def main():
+async def main() -> None:
     async with tractor.open_nursery(
         debug_mode=True,
     ) as an:
diff --git a/examples/debugging/subactor_bp_in_ctx.py b/examples/debugging/subactor_bp_in_ctx.py
index 36d4b2b3..eafeb0b7 100644
--- a/examples/debugging/subactor_bp_in_ctx.py
+++ b/examples/debugging/subactor_bp_in_ctx.py
@@ -34,7 +34,7 @@ async def just_bp(
 
 
 
-async def main():
+async def main() -> None:
 
     # !TODO, parametrize the --tpt-proto={key} with osenv vars just
     # like we do for loglevel/spawn-backend!
diff --git a/examples/debugging/subactor_breakpoint.py b/examples/debugging/subactor_breakpoint.py
index e3a4f250..0a047a21 100644
--- a/examples/debugging/subactor_breakpoint.py
+++ b/examples/debugging/subactor_breakpoint.py
@@ -12,7 +12,7 @@ async def breakpoint_forever():
         await tractor.pause()
 
 
-async def main():
+async def main() -> None:
 
     async with tractor.open_nursery(
         debug_mode=True,
diff --git a/examples/debugging/subactor_error.py b/examples/debugging/subactor_error.py
index 95c1fe12..fd280cb9 100644
--- a/examples/debugging/subactor_error.py
+++ b/examples/debugging/subactor_error.py
@@ -6,7 +6,7 @@ async def name_error():
     getattr(doggypants)  # noqa (on purpose)
 
 
-async def main():
+async def main() -> None:
     async with tractor.open_nursery(
         debug_mode=True,
     ) as an: