diff --git a/tests/extmod/asyncio_await_return.py.exp b/tests/extmod/asyncio_await_return.py.exp
deleted file mode 100644
index daaac9e303..0000000000
--- a/tests/extmod/asyncio_await_return.py.exp
+++ /dev/null
@@ -1,2 +0,0 @@
-42
-42
diff --git a/tests/extmod/asyncio_basic2.py.exp b/tests/extmod/asyncio_basic2.py.exp
deleted file mode 100644
index 3ca3521728..0000000000
--- a/tests/extmod/asyncio_basic2.py.exp
+++ /dev/null
@@ -1,4 +0,0 @@
-main start
-forever start
-main done
-42
diff --git a/tests/extmod/asyncio_cancel_fair.py.exp b/tests/extmod/asyncio_cancel_fair.py.exp
deleted file mode 100644
index 8f5da08e4c..0000000000
--- a/tests/extmod/asyncio_cancel_fair.py.exp
+++ /dev/null
@@ -1,24 +0,0 @@
-start 0
-start 1
-start 2
-done 0
-0 cancels 1
-start 0
-cancelled 1
-1 cancels 0
-start 1
-done 2
-start 2
-cancelled 0
-0 cancels 1
-start 0
-cancelled 1
-1 cancels 0
-start 1
-done 2
-start 2
-cancelled 0
-0 cancels 1
-cancelled 1
-1 cancels 0
-done 2
diff --git a/tests/extmod/asyncio_cancel_fair2.py.exp b/tests/extmod/asyncio_cancel_fair2.py.exp
deleted file mode 100644
index e9dd649b45..0000000000
--- a/tests/extmod/asyncio_cancel_fair2.py.exp
+++ /dev/null
@@ -1,8 +0,0 @@
-sleep a
-sleep b 0
-sleep b 1
-sleep b 2
-cancelled a
-done b 0
-done b 1
-done b 2
diff --git a/tests/extmod/asyncio_cancel_task.py.exp b/tests/extmod/asyncio_cancel_task.py.exp
deleted file mode 100644
index 031b94023f..0000000000
--- a/tests/extmod/asyncio_cancel_task.py.exp
+++ /dev/null
@@ -1,31 +0,0 @@
-True
-task start
-True
-main sleep
-task cancel
-task start
-True
-True
-True
-True
-main sleep
-task cancel
-main wait
-main got CancelledError
-task start
-task done
-False
-----
-task 2
-task start
-main cancel
-main sleep
-task cancel
-task 2 cancel
-----
-task 2
-task start
-main cancel
-main sleep
-task cancel
-task 2 done
diff --git a/tests/extmod/asyncio_cancel_wait_on_finished.py.exp b/tests/extmod/asyncio_cancel_wait_on_finished.py.exp
deleted file mode 100644
index 60e871bfe5..0000000000
--- a/tests/extmod/asyncio_cancel_wait_on_finished.py.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-main sleep
-sleep_task sleep
-wait_task wait
-main sleep
-sleep_task wake
-main wait
-CancelledError()
diff --git a/tests/extmod/asyncio_current_task.py.exp b/tests/extmod/asyncio_current_task.py.exp
deleted file mode 100644
index 0ca95142bb..0000000000
--- a/tests/extmod/asyncio_current_task.py.exp
+++ /dev/null
@@ -1 +0,0 @@
-True
diff --git a/tests/extmod/asyncio_event.py.exp b/tests/extmod/asyncio_event.py.exp
deleted file mode 100644
index 3188f291e5..0000000000
--- a/tests/extmod/asyncio_event.py.exp
+++ /dev/null
@@ -1,33 +0,0 @@
-False
-True
-False
-----
-yield
-start 1
-start 2
-set event
-yield
-True
-end 1
-True
-end 2
-----
-yield
-start 3
-True
-end 3
-----
-clear event
-start 4
-set event
-True
-end 4
-----
-start 5
-----
-start 6
-----
-set event
-----
-TimeoutError
-set event
diff --git a/tests/extmod/asyncio_event_fair.py.exp b/tests/extmod/asyncio_event_fair.py.exp
deleted file mode 100644
index fe2e3d6e47..0000000000
--- a/tests/extmod/asyncio_event_fair.py.exp
+++ /dev/null
@@ -1,16 +0,0 @@
-sleep 0
-wait 2
-sleep 1
-wait 3
-sleep 0
-sleep 1
-wait 2
-sleep 0
-sleep 1
-wait 3
-sleep 0
-sleep 1
-wait 2
-wait 3
-wait 2
-wait 3
diff --git a/tests/extmod/asyncio_exception.py.exp b/tests/extmod/asyncio_exception.py.exp
deleted file mode 100644
index b2ee860170..0000000000
--- a/tests/extmod/asyncio_exception.py.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-main start
-ValueError 1
-main start
-task start
-ValueError 2
-main start
-ValueError 3
diff --git a/tests/extmod/asyncio_fair.py b/tests/extmod/asyncio_fair.py
index 43076fef1d..3e3ac04735 100644
--- a/tests/extmod/asyncio_fair.py
+++ b/tests/extmod/asyncio_fair.py
@@ -20,7 +20,7 @@ async def main():
     t2 = asyncio.create_task(task(2, 0.1))
     t3 = asyncio.create_task(task(3, 0.18))
     t4 = asyncio.create_task(task(4, -100))
-    await asyncio.sleep(0.5)
+    await asyncio.sleep(0.45)  # t2 prints 5 times, t3 prints 3 times
     t1.cancel()
     t2.cancel()
     t3.cancel()
diff --git a/tests/extmod/asyncio_fair.py.exp b/tests/extmod/asyncio_fair.py.exp
deleted file mode 100644
index b4b6481db0..0000000000
--- a/tests/extmod/asyncio_fair.py.exp
+++ /dev/null
@@ -1,13 +0,0 @@
-task start 1
-task start 2
-task work 2
-task start 3
-task work 3
-task start 4
-task work 2
-task work 3
-task work 2
-task work 2
-task work 3
-task work 2
-finish
diff --git a/tests/extmod/asyncio_lock.py b/tests/extmod/asyncio_lock.py
index f565adb03f..10d3285be0 100644
--- a/tests/extmod/asyncio_lock.py
+++ b/tests/extmod/asyncio_lock.py
@@ -1,4 +1,8 @@
 # Test Lock class
+#
+# This test has a corresponding .exp file because it tests a very specific ordering of
+# events when cancelling a task waiting on a lock, and that ordering should not change
+# (even though it does match CPython's output).
 
 try:
     import asyncio
diff --git a/tests/extmod/asyncio_lock_cancel.py.exp b/tests/extmod/asyncio_lock_cancel.py.exp
deleted file mode 100644
index 49ae253887..0000000000
--- a/tests/extmod/asyncio_lock_cancel.py.exp
+++ /dev/null
@@ -1,11 +0,0 @@
-task 0 start
-task 1 start
-task 2 start
-task 3 start
-task 1 cancel
-task 2 cancel
-task 0 lock_flag False
-task 0 done
-task 3 lock_flag False
-task 3 done
-False
diff --git a/tests/extmod/asyncio_loop_stop.py.exp b/tests/extmod/asyncio_loop_stop.py.exp
deleted file mode 100644
index bada5f0d84..0000000000
--- a/tests/extmod/asyncio_loop_stop.py.exp
+++ /dev/null
@@ -1,7 +0,0 @@
-run 0
-start
-sleep
-run 1
-run 2
-task
-end
diff --git a/tests/extmod/asyncio_new_event_loop.py.exp b/tests/extmod/asyncio_new_event_loop.py.exp
deleted file mode 100644
index 9e104fda39..0000000000
--- a/tests/extmod/asyncio_new_event_loop.py.exp
+++ /dev/null
@@ -1,6 +0,0 @@
-start
-task 0
-stop
-start
-task 0
-stop
diff --git a/tests/extmod/asyncio_set_exception_handler.py.exp b/tests/extmod/asyncio_set_exception_handler.py.exp
deleted file mode 100644
index fb4711469d..0000000000
--- a/tests/extmod/asyncio_set_exception_handler.py.exp
+++ /dev/null
@@ -1,9 +0,0 @@
-None
-True
-sleep
-custom_handler ValueError(0, 1)
-sleep
-custom_handler ValueError(1, 2)
-custom_handler ValueError(2, 3)
-ValueError(3, 4)
-done
diff --git a/tests/extmod/asyncio_task_done.py.exp b/tests/extmod/asyncio_task_done.py.exp
deleted file mode 100644
index ddda04c5ec..0000000000
--- a/tests/extmod/asyncio_task_done.py.exp
+++ /dev/null
@@ -1,24 +0,0 @@
-==========
-False
-task start
-task done
-True
-True
-==========
-False
-task start
-False
-task done
-True
-==========
-False
-task start
-True
-ValueError()
-True
-==========
-False
-task start
-False
-ValueError()
-True