diff --git a/.github/workflows/generate_docs.yml b/.github/workflows/generate_docs.yml
index b842991..6cacdb4 100644
--- a/.github/workflows/generate_docs.yml
+++ b/.github/workflows/generate_docs.yml
@@ -22,6 +22,7 @@ jobs:
           pip install sphinx
           pip install sphinx-autodoc-typehints
           pip install sphinx-pdj-theme
+          pip install sphinx-rtd-theme
           mkdir doc
           sphinx-apidoc -o docs/source/ tol_lab_share tol_lab_share/config tol_lab_share/constants setup_dev_rabbit.py
           make html -C docs