diff --git a/iot-ruleengine/pom.xml b/iot-ruleengine/pom.xml
index 70723f0..1caaddd 100644
--- a/iot-ruleengine/pom.xml
+++ b/iot-ruleengine/pom.xml
@@ -37,7 +37,7 @@
 		<velocity-tools.version>2.0</velocity-tools.version>
 		<mail.version>1.4.3</mail.version>
 		<curator.version>2.11.0</curator.version>
-		<protobuf.version>3.0.2</protobuf.version>
+		<protobuf.version>3.16.3</protobuf.version>
 		<grpc.version>1.0.0</grpc.version>
 		<lombok.version>1.16.10</lombok.version>
 		<paho.client.version>1.1.0</paho.client.version>