diff --git a/e2e_tests/conftest.py b/e2e_tests/conftest.py
index 6f444de3f..7e87074b7 100644
--- a/e2e_tests/conftest.py
+++ b/e2e_tests/conftest.py
@@ -1,4 +1,5 @@
 import os
+import sys
 import signal
 import pytest
 import time
@@ -89,7 +90,7 @@ def _find_free_port(self):
 
     def start(self, checker_path=[]):
 
-        cmdline = f'python3 -m lyrebird -b -v --no-mitm --mock {self.port} --extra-mock {self.extra_mock_port}'
+        cmdline = f'{sys.executable} -m lyrebird -b -v --no-mitm --mock {self.port} --extra-mock {self.extra_mock_port}'
         for path in checker_path:
             cmdline = cmdline + f' --script {path}'
         self.lyrebird_process = subprocess.Popen(cmdline, shell=True, start_new_session=True)