diff --git a/pom.xml b/pom.xml
index 91ff9c4d2..b0757c227 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,6 +44,13 @@
WB1FQYI187
springdocs
+
+ @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@1.7.0
+ @springio/asciidoctor-extensions@1.0.0-alpha.9
+