diff --git a/udf/agent/py2/setup.py b/udf/agent/py2/setup.py
index 8efb3bbc3..309536f6b 100644
--- a/udf/agent/py2/setup.py
+++ b/udf/agent/py2/setup.py
@@ -14,7 +14,7 @@
         'kapacitor.udf',
     ],
     install_requires=[
-        "protobuf==3.17.3",
+        "protobuf==4.25.8",
     ],
     maintainer_email="support@influxdb.com",
     license="MIT",