diff --git a/proximoc-java/pom.xml b/proximoc-java/pom.xml
index 5a1d2c8..dec5c8c 100644
--- a/proximoc-java/pom.xml
+++ b/proximoc-java/pom.xml
@@ -49,7 +49,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>3.2.0</version>
+      <version>3.16.3</version>
     </dependency>
     <dependency>
       <groupId>io.grpc</groupId>