diff --git a/topics/testing/code/pom.xml b/topics/testing/code/pom.xml
index 7012e44..72e2068 100644
--- a/topics/testing/code/pom.xml
+++ b/topics/testing/code/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.8</version>
+        <version>4.0.0</version>
         <relativePath/>
     </parent>