diff --git a/convert/pom.xml b/convert/pom.xml
index 18701e6..003cbea 100644
--- a/convert/pom.xml
+++ b/convert/pom.xml
@@ -13,7 +13,7 @@
 
     <properties>
         <flexmark.version>0.64.4</flexmark.version>
-        <asciidoctorj.version>2.5.13</asciidoctorj.version>
+        <asciidoctorj.version>3.0.0</asciidoctorj.version>
         <asciidoctorj-diagram.version>2.3.1</asciidoctorj-diagram.version>
     </properties>
 
diff --git a/convert/src/main/kotlin/com/github/zeldigas/text2confl/convert/asciidoc/AsciidocParser.kt b/convert/src/main/kotlin/com/github/zeldigas/text2confl/convert/asciidoc/AsciidocParser.kt
index 8a640f0..640a567 100644
--- a/convert/src/main/kotlin/com/github/zeldigas/text2confl/convert/asciidoc/AsciidocParser.kt
+++ b/convert/src/main/kotlin/com/github/zeldigas/text2confl/convert/asciidoc/AsciidocParser.kt
@@ -64,11 +64,10 @@ class AsciidocParser(
     ) + config.attributes + parameters.extraAttrs
 
     private fun htmlConversionOptions(attrs: Map<String, Any?>) = parserOptions {
-        attributes(
-            Attributes.builder().attributes(attrs)
-                .sourceHighlighter("none")
-                .build()
-        )
+        val a = Attributes.builder().build()
+        a.setAttributes(attrs)
+        a.setSourceHighlighter("none")
+        attributes(a)
         templateDirs(templatesLocation.toFile())
     }