diff --git a/anair-service-proto/pom.xml b/anair-service-proto/pom.xml
index f641a40..f618556 100644
--- a/anair-service-proto/pom.xml
+++ b/anair-service-proto/pom.xml
@@ -17,7 +17,7 @@
     <description>Protobuf endpoint service</description>
 
     <properties>
-        <protobuf.version>3.16.1</protobuf.version>
+        <protobuf.version>3.16.3</protobuf.version>
         <protobuf-plugin.version>3.7.0.1</protobuf-plugin.version>
     </properties>