diff --git a/pom.xml b/pom.xml
index 0350ccbc..a6efec3f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -297,6 +297,14 @@ limitations under the License.
 							<version>0.0.4</version>
 							<extensions>true</extensions>
 							<configuration>
+								<packages>
+									<package>@antora/atlas-extension@1.0.0-alpha.1</package>
+									<package>@antora/collector-extension@1.0.0-alpha.3</package>
+									<package>@asciidoctor/tabs@1.0.0-beta.3</package>
+									<package>@springio/antora-extensions@1.5.0</package>
+									<package>@springio/asciidoctor-extensions@1.0.0-alpha.9</package>
+									<package>asciidoctor-kroki</package>
+								</packages>
 								<playbook>../src/docs/antora/antora-playbook.yml</playbook>
 								<options>
 									<option>--to-dir=target/antora/site</option>
diff --git a/src/docs/antora/antora-playbook.yml b/src/docs/antora/antora-playbook.yml
index 5b532c8f..d7985820 100644
--- a/src/docs/antora/antora-playbook.yml
+++ b/src/docs/antora/antora-playbook.yml
@@ -22,7 +22,9 @@ asciidoc:
     hide-uri-scheme: '@'
     tabs-sync-option: '@'
     chomp: 'all'
+    kroki-fetch-diagram: true
   extensions:
+    - asciidoctor-kroki
     - '@asciidoctor/tabs'
     - '@springio/asciidoctor-extensions'
   sourcemap: true