diff --git a/.github/workflows/sphinx_docs.yml b/.github/workflows/sphinx_docs.yml
index f1c72e7..2a5d153 100644
--- a/.github/workflows/sphinx_docs.yml
+++ b/.github/workflows/sphinx_docs.yml
@@ -37,6 +37,7 @@ jobs:
       - name: Run build script for Sphinx pages
         env:
           GITHUB_TOKEN: ${{ secrets.CHESSCOG_PAT_TOKEN }}
+          DEBIAN_FRONTEND: noninteractive
         run: |
           cd docs
           ./buildsite.sh