diff --git a/leti/0381/gi/1/async-not-blocking-chat/pom.xml b/leti/0381/gi/1/async-not-blocking-chat/pom.xml
index 285573d0..fdc2e479 100644
--- a/leti/0381/gi/1/async-not-blocking-chat/pom.xml
+++ b/leti/0381/gi/1/async-not-blocking-chat/pom.xml
@@ -26,7 +26,7 @@
             <dependency>
                 <groupId>com.google.protobuf</groupId>
                 <artifactId>protobuf-java</artifactId>
-                <version>2.6.1</version>
+                <version>3.16.1</version>
                 <scope>compile</scope>
             </dependency>
             <dependency>