diff --git a/antora/package-lock.json b/antora/package-lock.json
index 8f99838e420c..5ff7690654bb 100644
--- a/antora/package-lock.json
+++ b/antora/package-lock.json
@@ -12,7 +12,7 @@
         "@asciidoctor/tabs": "1.0.0-beta.6",
         "@springio/antora-extensions": "1.14.7",
         "@springio/antora-xref-extension": "1.0.0-alpha.4",
-        "@springio/antora-zip-contents-collector-extension": "1.0.0-alpha.8",
+        "@springio/antora-zip-contents-collector-extension": "1.0.0-alpha.9",
         "@springio/asciidoctor-extensions": "1.0.0-alpha.17",
         "patch-package": "^8.0.1"
       }
@@ -539,9 +539,10 @@
       }
     },
     "node_modules/@springio/antora-zip-contents-collector-extension": {
-      "version": "1.0.0-alpha.8",
-      "resolved": "https://registry.npmjs.org/@springio/antora-zip-contents-collector-extension/-/antora-zip-contents-collector-extension-1.0.0-alpha.8.tgz",
-      "integrity": "sha512-pp1hozg/UGQpkrJ17NImrcRd5b8hxIsLXHDYeBBR/vtzR7uiokxA1JxtL6PTfPAdjnrYf+2ApXdCgzLdNI7Rgg==",
+      "version": "1.0.0-alpha.9",
+      "resolved": "https://registry.npmjs.org/@springio/antora-zip-contents-collector-extension/-/antora-zip-contents-collector-extension-1.0.0-alpha.9.tgz",
+      "integrity": "sha512-b247InXT8lH4HscXATCxr9uzPXufHO2pvy7cBhuURr6N17G5KktD11CrI//Pa2MZddHDcFEeOFeiMHcAJjGHfg==",
+      "license": "Apache-2.0",
       "dependencies": {
         "@antora/expand-path-helper": "~2.0",
         "cache-directory": "~2.0",
diff --git a/antora/package.json b/antora/package.json
index fb93dcac527e..872c13646eed 100644
--- a/antora/package.json
+++ b/antora/package.json
@@ -9,7 +9,7 @@
     "@antora/atlas-extension": "1.0.0-alpha.5",
     "@springio/antora-extensions": "1.14.7",
     "@springio/antora-xref-extension": "1.0.0-alpha.4",
-    "@springio/antora-zip-contents-collector-extension": "1.0.0-alpha.8",
+    "@springio/antora-zip-contents-collector-extension": "1.0.0-alpha.9",
     "@asciidoctor/tabs": "1.0.0-beta.6",
     "@springio/asciidoctor-extensions": "1.0.0-alpha.17",
     "patch-package": "^8.0.1"