diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 0e9b17cd0..ccdc5878f 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -85,6 +85,7 @@ jobs:
           git clone --depth 1 https://${GH_TOKEN}@github.com/squidfunk/mkdocs-material-insiders.git
           pip install -e mkdocs-material-insiders
           cp mkdocs-material-insiders/mkdocs.yml mkdocs.yml
+          echo 'extra_javascript: [${{ vars.CHAT_CLIENT_URL }}]' >> mkdocs.yml
           rm -rf material
           cp -r mkdocs-material-insiders/material material