diff --git a/requirements.txt b/requirements.txt
index 988548f..a06833e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ confluent-kafka == 1.5.0
 etcd3           == 0.12.0
 netaddr         == 0.8.0
 netifaces       == 0.10.9
-protobuf        == 3.17.3
+protobuf        == 3.18.3
 structlog       == 21.1.0
 txaioetcd       == 18.10.2
 #voltha-protos   == 4.2.0