diff --git a/python/requirements.txt b/python/requirements.txt
index 6383d016..3fc0c74b 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,2 +1,2 @@
 grpcio==1.12.0
-protobuf==3.5.2.post1
\ No newline at end of file
+protobuf==3.18.3
\ No newline at end of file