diff --git a/wicket-spring-boot-starter-example/pom.xml b/wicket-spring-boot-starter-example/pom.xml
index d94a486..3cff661 100644
--- a/wicket-spring-boot-starter-example/pom.xml
+++ b/wicket-spring-boot-starter-example/pom.xml
@@ -84,7 +84,7 @@
 		<dependency>
 			<groupId>org.webjars</groupId>
 			<artifactId>bootstrap</artifactId>
-			<version>3.4.1</version>
+			<version>5.3.3</version>
 		</dependency>
 		<dependency>
 			<groupId>de.agilecoders.wicket</groupId>