diff --git a/kafka_mongodb_process/requirements.txt b/kafka_mongodb_process/requirements.txt
index 26430e7..af635d0 100644
--- a/kafka_mongodb_process/requirements.txt
+++ b/kafka_mongodb_process/requirements.txt
@@ -35,7 +35,7 @@ oauthlib==2.1.0
 olefile==0.46
 pexpect==4.6.0
 Pillow==5.4.1
-protobuf==3.6.1
+protobuf==3.18.3
 pycairo==1.16.2
 pycrypto==2.6.1
 pycups==1.9.73