diff --git a/csc/2016/toe/toe_1_java/pom.xml b/csc/2016/toe/toe_1_java/pom.xml
index 693241d39..1eb9dc667 100644
--- a/csc/2016/toe/toe_1_java/pom.xml
+++ b/csc/2016/toe/toe_1_java/pom.xml
@@ -24,7 +24,7 @@
         <dependency>
             <groupId>com.google.protobuf</groupId>
             <artifactId>protobuf-java</artifactId>
-            <version>2.6.1</version>
+            <version>3.16.3</version>
         </dependency>
     </dependencies>
 </project>