diff --git a/python/setup.py.client.in b/python/setup.py.client.in
index 4613d2db7747d06ab706bc96181f612985630811..96773c38dc950c0b8357274dff30d7c952ecdc25 100644
--- a/python/setup.py.client.in
+++ b/python/setup.py.client.in
@@ -58,7 +58,7 @@ if '${PACK}' == 'ON':
 
 
 REQUIRED_PACKAGES = [
-    'six >= 1.10.0', 'protobuf >= 3.1.0', 'numpy >= 1.12', 'grpcio >= 1.28.1',
+    'six >= 1.10.0', 'protobuf >= 3.11.0', 'numpy >= 1.12', 'grpcio >= 1.28.1',
     'grpcio-tools >= 1.28.1'
 ]