diff --git a/pom.xml b/pom.xml
index 78dbe92..a3d2c62 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
                     <dependency>
                         <groupId>org.asciidoctor</groupId>
                         <artifactId>asciidoctorj-diagram</artifactId>
-                        <version>2.1.2</version>
+                        <version>2.2.4</version>
                     </dependency>
                 </dependencies>
                 <configuration>