diff --git a/antora-playbook.yml b/antora-playbook.yml
index 53541179..c5b40b1d 100644
--- a/antora-playbook.yml
+++ b/antora-playbook.yml
@@ -365,6 +365,9 @@ antora:
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/generate-rp-connect-categories'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/modify-redirects'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/process-context-switcher'
+  # Point UI meta tags (properties-json-url, connect-json-url) at the newest
+  # generated JSON attachments that exist in the catalog, so version drift
+  # between release tags and generated JSON never produces 404 URLs
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/algolia-indexer/index'
     excludes: ['.thumbs','script', '.page-versions','.feedback-section','.banner-container']
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/archive-attachments'
@@ -396,6 +399,10 @@ antora:
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/unlisted-pages'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/add-global-attributes'
   - '@redpanda-data/docs-extensions-and-macros/extensions/version-fetcher/set-latest-version'
+  # Registered after version-fetcher on purpose: this extension only sets
+  # attributes that are not already set, and its tooltip-disable branch reads
+  # latest-redpanda-tag, so the fetcher must run first.
+  - require: '@redpanda-data/docs-extensions-and-macros/extensions/set-available-attachment-versions'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/replace-attributes-in-attachments'
     data:
       replacements:
diff --git a/local-antora-playbook.yml b/local-antora-playbook.yml
index 4dd4f7b8..9f40c014 100644
--- a/local-antora-playbook.yml
+++ b/local-antora-playbook.yml
@@ -290,6 +290,9 @@ antora:
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/convert-to-markdown'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/add-llms-directive'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/process-context-switcher'
+  # Point UI meta tags (properties-json-url, connect-json-url) at the newest
+  # generated JSON attachments that exist in the catalog, so version drift
+  # between release tags and generated JSON never produces 404 URLs
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/generate-index-data'
     data:
       sets:
@@ -328,6 +331,10 @@ antora:
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/unlisted-pages'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/add-global-attributes'
   - '@redpanda-data/docs-extensions-and-macros/extensions/version-fetcher/set-latest-version'
+  # Registered after version-fetcher on purpose: this extension only sets
+  # attributes that are not already set, and its tooltip-disable branch reads
+  # latest-redpanda-tag, so the fetcher must run first.
+  - require: '@redpanda-data/docs-extensions-and-macros/extensions/set-available-attachment-versions'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/replace-attributes-in-attachments'
     data:
       replacements:
diff --git a/package-lock.json b/package-lock.json
index 30e00c14..33ff7802 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "@asciidoctor/tabs": "^1.0.0-beta.5",
         "@modelcontextprotocol/sdk": "1.17.0",
         "@modelfetch/netlify": "0.15.2",
-        "@redpanda-data/docs-extensions-and-macros": "^5.0.0",
+        "@redpanda-data/docs-extensions-and-macros": "^5.3.5",
         "@sntke/antora-mermaid-extension": "^0.0.6",
         "algoliasearch": "^5.35.0",
         "hono-rate-limiter": "0.1.0",
@@ -2029,9 +2029,9 @@
       "license": "MIT"
     },
     "node_modules/@redpanda-data/docs-extensions-and-macros": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/@redpanda-data/docs-extensions-and-macros/-/docs-extensions-and-macros-5.0.0.tgz",
-      "integrity": "sha512-39rjNtv1oiHl/5vPYbkMwG+X6MYCc20868sfg4/Z5+WmcT0YcIuDtig/+CmbMHBmvuucRrUClk6DBYAtsUXoYQ==",
+      "version": "5.3.5",
+      "resolved": "https://registry.npmjs.org/@redpanda-data/docs-extensions-and-macros/-/docs-extensions-and-macros-5.3.5.tgz",
+      "integrity": "sha512-5synHF3EltMlXxWF8lr6JVIp10BlKMvnnLV8v1gJeIVvH5+W4jlk6Y/QpOmlpbPrq4KyawaY2+EmxpPGQ10lPQ==",
       "license": "ISC",
       "dependencies": {
         "@asciidoctor/tabs": "^1.0.0-beta.6",
@@ -2041,7 +2041,7 @@
         "@octokit/plugin-retry": "^7.1.1",
         "@octokit/rest": "^21.1.1",
         "@redocly/cli": "^2.2.0",
-        "ajv": "^8.12.0",
+        "ajv": "^8.20.0",
         "algoliasearch": "^4.17.0",
         "chalk": "4.1.2",
         "cheerio": "^1.1.2",
diff --git a/package.json b/package.json
index 7fbe626f..d29bf9e1 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "@asciidoctor/tabs": "^1.0.0-beta.5",
     "@modelcontextprotocol/sdk": "1.17.0",
     "@modelfetch/netlify": "0.15.2",
-    "@redpanda-data/docs-extensions-and-macros": "^5.0.0",
+    "@redpanda-data/docs-extensions-and-macros": "^5.3.5",
     "@sntke/antora-mermaid-extension": "^0.0.6",
     "algoliasearch": "^5.35.0",
     "hono-rate-limiter": "0.1.0",
diff --git a/preview-antora-playbook.yml b/preview-antora-playbook.yml
index 56234379..3194968f 100644
--- a/preview-antora-playbook.yml
+++ b/preview-antora-playbook.yml
@@ -67,6 +67,9 @@ antora:
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/convert-to-markdown'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/add-llms-directive'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/process-context-switcher'
+  # Point UI meta tags (properties-json-url, connect-json-url) at the newest
+  # generated JSON attachments that exist in the catalog, so version drift
+  # between release tags and generated JSON never produces 404 URLs
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/generate-index-data'
     data:
       sets:
@@ -105,6 +108,10 @@ antora:
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/unlisted-pages'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/add-global-attributes'
   - '@redpanda-data/docs-extensions-and-macros/extensions/version-fetcher/set-latest-version'
+  # Registered after version-fetcher on purpose: this extension only sets
+  # attributes that are not already set, and its tooltip-disable branch reads
+  # latest-redpanda-tag, so the fetcher must run first.
+  - require: '@redpanda-data/docs-extensions-and-macros/extensions/set-available-attachment-versions'
   - require: '@redpanda-data/docs-extensions-and-macros/extensions/replace-attributes-in-attachments'
     data:
       replacements: