diff --git a/.github/workflows/publish_docs.yml b/.github/workflows/publish_docs.yml
index 5f7c915f70..697d4da4bb 100644
--- a/.github/workflows/publish_docs.yml
+++ b/.github/workflows/publish_docs.yml
@@ -17,7 +17,7 @@ jobs:
     steps:
     - name: Requirements
       run: brew install doxygen
-        && brew install sphinx-doc
+        && pip3 install sphinx==4.0.3
         && pip3 install sphinx-rtd-theme
         && pip3 install sphinxcontrib-bibtex
         && pip3 install breathe