diff --git a/.github/scripts/update-demo-registry-vars.sh b/.github/scripts/update-demo-registry-vars.sh
new file mode 100644
index 0000000000..2e45336dc8
--- /dev/null
+++ b/.github/scripts/update-demo-registry-vars.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+find ./github-pages -name '*.html' -exec sed -i "s/{{{registry-name}}}/demo-registry/g" {} \;
+find ./github-pages -name '*.html' -exec sed -i "s/{{{cluster-name}}}/cluster-name/g" {} \;
+find ./github-pages -name '*.html' -exec sed -i "s/{{{dns-wildcard}}}/domain.com/g" {} \;
diff --git a/.github/workflows/antora-build.yml b/.github/workflows/antora-build.yml
index 8a87b0578d..cd672e7a8c 100644
--- a/.github/workflows/antora-build.yml
+++ b/.github/workflows/antora-build.yml
@@ -20,6 +20,9 @@ jobs:
         run: npx antora site-en-github.yaml
       - name: Generate Site UA
         run: npx antora site-ua-github.yaml
+      - name: Run update vars script for demo registry's URLs
+        run: ./.github/scripts/update-demo-registry-vars.sh
+        shell: bash
       - name: Publish to GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         with: