diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 8ef72a84e..89e43d6d8
--- a/pom.xml
+++ b/pom.xml
@@ -63,7 +63,7 @@
         <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>1.18.4</lombok.version>
         <paho.client.version>1.1.0</paho.client.version>