diff --git a/wicket-user-guide/pom.xml b/wicket-user-guide/pom.xml
index c38da7fb0f2..043d7d37bff 100644
--- a/wicket-user-guide/pom.xml
+++ b/wicket-user-guide/pom.xml
@@ -156,7 +156,7 @@
 						<dependency>
 							<groupId>org.asciidoctor</groupId>
 							<artifactId>asciidoctorj-diagram</artifactId>
-							<version>2.2.4</version>
+							<version>2.2.11</version>
 						</dependency>
 					</dependencies>
 				</plugin>