diff --git a/Makefile b/Makefile
index a8c3d43..53310b2 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,6 @@ format:
 
 .PHONY: lint
 lint:
-	$(PYTHON) -m ruff $(python_files)
+	$(PYTHON) -m ruff check $(python_files)
 	$(PYTHON) -m isort --check $(python_files)
-	$(PYTHON) -m black --check $(python_files)
\ No newline at end of file
+	$(PYTHON) -m black --check $(python_files)
diff --git a/README.md b/README.md
index 7d017e1..3b4f697 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@
 
 A pytest plug-in for easy integration of PyStack in your test suite.
 
-It can be used to automatically dump the stack trace of a hanging test in your suite.
+It can be used to automatically dump the stack trace of a hanging test in your suite (with exception to test using `pytester` fixture).
 
 See [PyStack](https://github.com/bloomberg/pystack) for further information about the tool.
 
diff --git a/src/pytest_pystack/_monitor_process.py b/src/pytest_pystack/_monitor_process.py
index 100ec09..b24fa0a 100644
--- a/src/pytest_pystack/_monitor_process.py
+++ b/src/pytest_pystack/_monitor_process.py
@@ -53,7 +53,12 @@ def _run_monitor(config: PystackConfig, pid, queue):
         handled_test_cases.add(testcase)
 
         try:
-            if queue.get(timeout=config.threshold) != testcase:
+            new_testcase = queue.get(timeout=config.threshold)
+            if new_testcase != testcase:
+                print(
+                    f"new test {new_testcase} should not start before previous {testcase} test finished",
+                    file=sys.__stderr__,
+                )
                 raise Exception(
                     "new test should not start before previous test finished"
                 )
diff --git a/src/pytest_pystack/plugin.py b/src/pytest_pystack/plugin.py
index 16a1cd0..1169e47 100644
--- a/src/pytest_pystack/plugin.py
+++ b/src/pytest_pystack/plugin.py
@@ -62,7 +62,11 @@ def pytest_addoption(parser) -> None:
 
 @pytest.hookimpl
 def pytest_runtest_makereport(item, call):
-    if call.when in {"setup", "teardown"} and item.config._pystack_queue:
+    if (
+        call.when in {"setup", "teardown"}
+        and item.config._pystack_queue
+        and "pytester" not in item.fixturenames
+    ):
         item.config._pystack_queue.put(item.name)
 
 
diff --git a/tests/test_pytest_pystack.py b/tests/test_pytest_pystack.py
index 098e471..a495943 100644
--- a/tests/test_pytest_pystack.py
+++ b/tests/test_pytest_pystack.py
@@ -303,3 +303,38 @@ def test_two_slow_tests_in_a_suite_prints_both(testdir, monkeypatch, capfd):
     print(stderr)
     assert "PYSTACK  -- test_sleeping_test" in stderr
     assert "PYSTACK  -- test_sleeping_test2" in stderr
+
+
+def test_pytester_compat(testdir, capfd, monkeypatch):
+    """Make sure that our make_napari_viewer plugin works."""
+
+    # create a temporary pytest test file
+
+    monkeypatch.chdir(testdir.tmpdir)
+    testdir.makepyfile(
+        """
+pytest_plugins = 'pytester'
+
+test_file ='''
+import time
+
+
+def test_sleep():
+    time.sleep(1)
+    assert 1 == 1
+'''
+
+
+def test_pytester(pytester):
+    pytester.makepyfile(test_file)
+    result = pytester.runpytest()
+    result.assert_outcomes(passed=1)
+    """
+    )
+    result = testdir.runpytest("--pystack-threshold=3", "-s")
+
+    # check that all 1 test passed
+    result.assert_outcomes(passed=1)
+
+    _, stderr = capfd.readouterr()
+    assert not stderr