diff --git a/code-notes-demo/rsx-rpc/pom.xml b/code-notes-demo/rsx-rpc/pom.xml
index 6809cc0..f8b25bb 100644
--- a/code-notes-demo/rsx-rpc/pom.xml
+++ b/code-notes-demo/rsx-rpc/pom.xml
@@ -65,7 +65,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>28.1-jre</version>
+            <version>29.0-jre</version>
         </dependency>
     </dependencies>
 </project>
\ No newline at end of file