diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 77604fa7..11d3bf31 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,6 +40,12 @@ jobs:
           branch: main
           name: build-cache
           path: _build
+      # Build HTML
+      - name: Build HTML
+        shell: bash -l {0}
+        run: |
+          ls _build
+          jb build lectures --path-output ./ -n -W --keep-going
       # Build Assets (Download Notebooks and PDF via LaTeX)
       - name: Build Download Notebooks (sphinx-tojupyter)
         shell: bash -l {0}