diff --git a/test/test_util.py b/test/test_util.py
index 0111ffb32..3fb0208f3 100644
--- a/test/test_util.py
+++ b/test/test_util.py
@@ -562,3 +562,14 @@ def test_construct_pip_call(declaration, expected_result):
 ])
 def test_replace_cpython_version(arg, new_version, expected):
     assert util.replace_cpython_version(arg, new_version) == expected
+
+
+@pytest.mark.parametrize("path, expected_version", [
+    ("/home/jdoe/micromamba/envs/asv_exp/bin/python3.11", "3.11"),
+    ("/usr/local/bin/python3.12", "3.12"),
+    ("/opt/anaconda3/bin/python3.9", "3.9"),
+    ("/usr/bin/python", None),
+    ("/home/user/custom_python/python_alpha", None),
+])
+def test_extract_python_version(path, expected_version):
+    assert util.extract_cpython_version(path) == expected_version
diff --git a/test/test_workflow.py b/test/test_workflow.py
index a55e0f173..f7b1e0d7e 100644
--- a/test/test_workflow.py
+++ b/test/test_workflow.py
@@ -72,7 +72,7 @@ def basic_conf(tmpdir, dummy_packages):
 
 
 @pytest.mark.skipif(tools.HAS_PYPY or (os.name == 'nt'), reason="Flaky on pypy and windows")
-def test_run_publish(capfd, basic_conf):
+def test_run_publish(capfd, basic_conf, request: pytest.FixtureRequest):
     tmpdir, local, conf, machine_file = basic_conf
     tmpdir = util.long_path(tmpdir)