diff --git a/spring-boot-webflux/pom.xml b/spring-boot-webflux/pom.xml
index 6c4fed8..13c082a 100644
--- a/spring-boot-webflux/pom.xml
+++ b/spring-boot-webflux/pom.xml
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>26.0-jre</version>
+            <version>29.0-jre</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>