diff --git a/.github/workflows/doc_dev.yml b/.github/workflows/doc_dev.yml
index 167f9aa..3a44944 100644
--- a/.github/workflows/doc_dev.yml
+++ b/.github/workflows/doc_dev.yml
@@ -25,6 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           pip install .
+          pip install -r docs/requirements.txt
       - name: Sphinx build
         run: |
           sphinx-build docs _build