diff --git a/tests/support/plugins/bokeh_server.py b/tests/support/plugins/bokeh_server.py
index c37f31bfa..50d786a4b 100644
--- a/tests/support/plugins/bokeh_server.py
+++ b/tests/support/plugins/bokeh_server.py
@@ -55,7 +55,7 @@ __all__ = (
 def bokeh_server(request: pytest.FixtureRequest, log_file: IO[str]) -> str:
     bokeh_port: int = request.config.option.bokeh_port
 
-    cmd = ["python", "-m", "bokeh", "serve"]
+    cmd = [sys.executable, "-m", "bokeh", "serve"]
     argv = [f"--port={bokeh_port}"]
     bokeh_server_url = f"http://localhost:{bokeh_port}"
 
diff --git a/tests/test_examples.py b/tests/test_examples.py
index 7072f2f88..1dfb1a4e8 100644
--- a/tests/test_examples.py
+++ b/tests/test_examples.py
@@ -268,7 +268,7 @@ with open(filename, 'rb') as example:
     exec(compile(example.read(), filename, 'exec'))
 """
 
-    cmd = ["python", "-c", code]
+    cmd = [sys.executable, "-c", code]
     cwd = dirname(example.path)
 
     env = os.environ.copy()