diff --git a/python/setup.py b/python/setup.py
index 456a45a..cf3f468 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -25,6 +25,6 @@
         'Operating System :: Other OS',
     ],
     install_requires=[
-        'protobuf==3.3.0',
+        'protobuf==3.18.3',
     ]
 )