diff --git a/pom.xml b/pom.xml
index 2850c7e2..a45b7162 100644
--- a/pom.xml
+++ b/pom.xml
@@ -240,12 +240,12 @@
 							<dependency>
 								<groupId>org.asciidoctor</groupId>
 								<artifactId>asciidoctorj-pdf</artifactId>
-								<version>1.5.0-alpha.16</version>
+								<version>1.5.0-alpha.18</version>
 							</dependency>
 							<dependency>
 								<groupId>org.asciidoctor</groupId>
 								<artifactId>asciidoctorj-diagram</artifactId>
-								<version>1.5.10</version>
+								<version>1.5.18</version>
 							</dependency>
 						</dependencies>
 						<executions>