diff --git a/.github/workflows/R_CDM_check_hades.yaml b/.github/workflows/R_CDM_check_hades.yaml
index 2addc69..9f57358 100644
--- a/.github/workflows/R_CDM_check_hades.yaml
+++ b/.github/workflows/R_CDM_check_hades.yaml
@@ -70,6 +70,10 @@ jobs:
           cache: always
           extra-packages: any::rcmdcheck
           needs: check
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
           
       - name: setup r-reticulate venv
         shell: Rscript {0}