diff --git a/asciidoctor-maven-commons/src/main/java/org/asciidoctor/maven/site/SiteConversionConfigurationParser.java b/asciidoctor-maven-commons/src/main/java/org/asciidoctor/maven/site/SiteConversionConfigurationParser.java
index f6ae9e63..845fb261 100644
--- a/asciidoctor-maven-commons/src/main/java/org/asciidoctor/maven/site/SiteConversionConfigurationParser.java
+++ b/asciidoctor-maven-commons/src/main/java/org/asciidoctor/maven/site/SiteConversionConfigurationParser.java
@@ -1,6 +1,7 @@
 package org.asciidoctor.maven.site;
 
 import org.apache.maven.project.MavenProject;
+import org.asciidoctor.Attributes;
 import org.asciidoctor.AttributesBuilder;
 import org.asciidoctor.Options;
 import org.asciidoctor.OptionsBuilder;
@@ -9,7 +10,10 @@
 import org.codehaus.plexus.util.xml.Xpp3Dom;
 
 import java.io.File;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -29,17 +33,21 @@ public SiteConversionConfiguration processAsciiDocConfig(Xpp3Dom siteConfig,
 
         AsciidoctorHelper.addProperties(project.getProperties(), presetAttributes);
 
-        final Xpp3Dom siteConfiguration = Optional.ofNullable(siteConfig)
-                .map(sc -> sc.getChild("asciidoc"))
-                .orElse(null);
+        final Attributes attributes = presetAttributes.build();
 
-        if (siteConfiguration == null) {
-            final OptionsBuilder options = presetOptions.attributes(presetAttributes.build());
-            return new SiteConversionConfiguration(options.build(), Collections.emptyList());
+        if (siteConfig == null) {
+            final Options options = presetOptions.attributes(attributes).build();
+            return new SiteConversionConfiguration(options, Collections.emptyList());
+        }
+
+        final Xpp3Dom asciidocConfig = siteConfig.getChild("asciidoc");
+        if (asciidocConfig == null) {
+            final Options options = presetOptions.attributes(attributes).build();
+            return new SiteConversionConfiguration(options, Collections.emptyList());
         }
 
         final List<String> gemsToRequire = new ArrayList<>();
-        for (Xpp3Dom asciidocOpt : siteConfiguration.getChildren()) {
+        for (Xpp3Dom asciidocOpt : asciidocConfig.getChildren()) {
             String optName = asciidocOpt.getName();
 
             if ("requires".equals(optName)) {
@@ -79,12 +87,12 @@ public SiteConversionConfiguration processAsciiDocConfig(Xpp3Dom siteConfig,
             }
         }
 
-        final Options options = presetOptions.attributes(presetAttributes.build()).build();
+        final Options options = presetOptions.attributes(attributes).build();
         return new SiteConversionConfiguration(options, gemsToRequire);
     }
 
     private File resolveProjectDir(MavenProject project, String path) {
         final File filePath = new File(path);
-        return !filePath.isAbsolute() ? new File(project.getBasedir(), filePath.toString()): filePath;
+        return !filePath.isAbsolute() ? new File(project.getBasedir(), filePath.toString()) : filePath;
     }
 }
diff --git a/asciidoctor-maven-plugin/src/test/java/org/asciidoctor/maven/test/processors/ManpageInlineMacroProcessor.java b/asciidoctor-maven-plugin/src/test/java/org/asciidoctor/maven/test/processors/ManpageInlineMacroProcessor.java
index 0600ffb3..951f9de7 100644
--- a/asciidoctor-maven-plugin/src/test/java/org/asciidoctor/maven/test/processors/ManpageInlineMacroProcessor.java
+++ b/asciidoctor-maven-plugin/src/test/java/org/asciidoctor/maven/test/processors/ManpageInlineMacroProcessor.java
@@ -14,7 +14,6 @@ public ManpageInlineMacroProcessor(String macroName) {
 
     @Override
     public String process(ContentNode parent, String target, Map<String, Object> attributes) {
-
         final Map<String, Object> options = new HashMap<>();
         options.put("type", ":link");
         options.put("target", target + ".html");
diff --git a/pom.xml b/pom.xml
index ff22ca30..34d38a8c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,7 +76,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.java.version>11</project.java.version>
         <project.execution.environment>JavaSE-1.8</project.execution.environment>
-        <asciidoctorj.version>2.5.10</asciidoctorj.version>
+        <asciidoctorj.version>3.0.0-alpha.1</asciidoctorj.version>
         <jruby.version>9.4.2.0</jruby.version>
         <maven.project.version>3.9.1</maven.project.version>
         <maven.jacoco.plugin.version>0.8.8</maven.jacoco.plugin.version>