up (ray-project#25211)

fishbone · Kai Fricke · commit 3be5578645ce · 2022-05-27T18:53:27.000+02:00
diff --git a/python/setup.py b/python/setup.py
@@ -273,7 +273,7 @@ def get_packages(self):
         "msgpack >= 1.0.0, < 2.0.0",
         "numpy >= 1.16; python_version < '3.9'",
         "numpy >= 1.19.3; python_version >= '3.9'",
-        "protobuf >= 3.15.3",
+        "protobuf >= 3.15.3, < 4.0.0",
         "pyyaml",
         "aiosignal",
         "frozenlist",
