diff --git a/tests/python_client/deploy/requirements.txt b/tests/python_client/deploy/requirements.txt
index 98915ddd0a..15c7935349 100644
--- a/tests/python_client/deploy/requirements.txt
+++ b/tests/python_client/deploy/requirements.txt
@@ -1,3 +1,4 @@
+--extra-index-url https://test.pypi.org/simple/
 docker==5.0.0
 grpcio==1.37.1
 grpcio-tools==1.37.1