diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index ea3575f..c128dab
--- a/pom.xml
+++ b/pom.xml
@@ -80,7 +80,7 @@
             <dependency>
                 <groupId>com.google.protobuf</groupId>
                 <artifactId>protobuf-java</artifactId>
-                <version>3.0.0</version>
+                <version>3.16.1</version>
             </dependency>
             <dependency>
                 <groupId>io.reactivex</groupId>