diff --git a/asciidoctor-diagram-example/pom.xml b/asciidoctor-diagram-example/pom.xml
index 8d645b6..4e6d28f 100644
--- a/asciidoctor-diagram-example/pom.xml
+++ b/asciidoctor-diagram-example/pom.xml
@@ -13,7 +13,7 @@
         <asciidoctor.maven.plugin.version>3.2.0</asciidoctor.maven.plugin.version>
         <asciidoctorj.version>3.0.0</asciidoctorj.version>
         <asciidoctorj.diagram.version>2.3.2</asciidoctorj.diagram.version>
-        <jruby.version>9.4.12.0</jruby.version>
+        <jruby.version>9.4.12.1</jruby.version>
     </properties>
 
     <build>