diff --git a/pom.xml b/pom.xml
index 0e9457a..e45bf90 100644
--- a/pom.xml
+++ b/pom.xml
@@ -67,7 +67,7 @@
     <revision>0.1.10</revision>
 
     <slf4j.version>1.7.30</slf4j.version>
-    <protobuf.version>3.11.0</protobuf.version>
+    <protobuf.version>3.16.3</protobuf.version>
     <jeromq.version>0.5.2</jeromq.version>
 
     <hazelcast.version>4.0.1</hazelcast.version>