diff --git a/example-server/pom.xml b/example-server/pom.xml
index afc2bf4..82811a7 100644
--- a/example-server/pom.xml
+++ b/example-server/pom.xml
@@ -95,7 +95,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>26.0-jre</version>
+            <version>29.0-jre</version>
         </dependency>
         <dependency>
             <groupId>com.alibaba</groupId>