diff --git a/antora-playbook.yml b/antora-playbook.yml
index 66467c8c12..aeecbffa8a 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -26,6 +26,7 @@ asciidoc:
   extensions:
   - '@asciidoctor/tabs'
   - '@springio/asciidoctor-extensions'
+  - '@springio/asciidoctor-extensions/javadoc-extension'
 urls:
   latest_version_segment_strategy: redirect:to
   latest_version_segment: ''
diff --git a/build.gradle b/build.gradle
index ad09d1acab..36494fa31e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,10 +8,10 @@ antora {
 	options = [clean: true, fetch: true, stacktrace: true]
 	// NOTE remember to update the versions in lib/antora/templates/per-branch-antora-playbook.yml as well
 	dependencies = [
-			'@antora/atlas-extension'         : '1.0.0-alpha.1',
-			'@antora/collector-extension'     : '1.0.0-alpha.3',
-			'@asciidoctor/tabs'               : '1.0.0-beta.3',
-			'@springio/antora-extensions'     : '1.11.1',
-			'@springio/asciidoctor-extensions': '1.0.0-alpha.10',
+			'@antora/atlas-extension'         : '1.0.0-alpha.2',
+			'@antora/collector-extension'     : '1.0.1',
+			'@asciidoctor/tabs'               : '1.0.0-beta.6',
+			'@springio/antora-extensions'     : '1.14.4',
+			'@springio/asciidoctor-extensions': '1.0.0-alpha.16',
 	]
 }