diff --git a/tests/conftest.py b/tests/conftest.py
index 608482b0..655de403 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -22,12 +22,12 @@
 
 
 def pytest_sessionstart(session):
-    subprocess.run(["ray", "stop"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-    subprocess.run(["ray", "start", "--head", "--disable-usage-stats", "--port=6379"], check=True,
+    subprocess.run(["ray", "stop"], check=False, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    subprocess.run(["ray", "start", "--head", "--disable-usage-stats", "--port=6379"], check=False,
                    stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 
 def pytest_sessionfinish(session, exitstatus):
-    subprocess.run(["ray", "stop"], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    subprocess.run(["ray", "stop"], check=False, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
 
 @pytest.fixture
 def setup_ray_env():
diff --git a/tests/e2e_test/utils.py b/tests/e2e_test/utils.py
index 31329929..b3fda486 100644
--- a/tests/e2e_test/utils.py
+++ b/tests/e2e_test/utils.py
@@ -159,8 +159,8 @@ def cleanup_ray_env():
     cleanup_ray_env_func()
 
 def shutdown_llumnix_service_func():
-    subprocess.run('pkill -f llumnix.entrypoints.vllm.api_server', shell=True, check=True)
-    subprocess.run('pkill -f benchmark_serving.py', shell=True, check=True)
+    subprocess.run('pkill -f llumnix.entrypoints.vllm.api_server', shell=True, check=False)
+    subprocess.run('pkill -f benchmark_serving.py', shell=True, check=False)
 
 @pytest.fixture
 def shutdown_llumnix_service():