diff --git a/playground-backend/pom.xml b/playground-backend/pom.xml
index 4e2c3cb..6a58cea 100644
--- a/playground-backend/pom.xml
+++ b/playground-backend/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.3.3</version>
+		<version>3.3.4</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>ch.sbb</groupId>