diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 31d9cc514fa..2e3facc2a5d 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -138,6 +138,7 @@ jobs:
         run: python3 -m pip -v install --global-option build --global-option --debug python/
       - name: Build Python interface documentation
         run: |
+          python3 -m pip sphinx==5.0.2
           cd python/doc
           make html