THRIFT-5757: finish PHP cross-test integration
diff --git a/test/py/TestClient.py b/test/py/TestClient.py
index 07b39a0..316ff88 100755
--- a/test/py/TestClient.py
+++ b/test/py/TestClient.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
 # Licensed to the Apache Software Foundation (ASF) under one