diff --git a/docs/package.json b/docs/package.json
index 0f26cfaab4b..60694d7480c 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -4,7 +4,7 @@
     "@antora/atlas-extension": "1.0.0-alpha.2",
     "@antora/collector-extension": "1.0.0-alpha.7",
     "@asciidoctor/tabs": "1.0.0-beta.6",
-    "@springio/antora-extensions": "1.12.0",
+    "@springio/antora-extensions": "1.13.0",
     "@springio/asciidoctor-extensions": "1.0.0-alpha.12"
   }
 }