diff --git a/.github/workflows/publish_docs.yml b/.github/workflows/publish_docs.yml
index 80bb6c23..ed4aa3c2 100644
--- a/.github/workflows/publish_docs.yml
+++ b/.github/workflows/publish_docs.yml
@@ -9,6 +9,8 @@ jobs:
     name: Create the documentation and deploy it to GitHub Pages
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: recursive
       - name: Set up Node.js
         uses: actions/setup-node@v3
         with: