diff --git a/bbs-java/pom.xml b/bbs-java/pom.xml
old mode 100755
new mode 100644
index c1e04dc..67d9421
--- a/bbs-java/pom.xml
+++ b/bbs-java/pom.xml
@@ -128,7 +128,7 @@
 		<dependency>
 			<groupId>com.google.protobuf</groupId>
 			<artifactId>protobuf-java</artifactId>
-			<version>3.4.0</version>
+			<version>3.16.1</version>
 		</dependency>
 
 		<dependency>