diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 7eb2e0b..a4435b0 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -52,6 +52,11 @@ jobs:
           diff configure_v rust_v
           diff configure_v ocaml_v
 
+      - name: setup fixed Python version for testing
+        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f
+        with:
+          python-version: '3.10'
+
       - name: install dependencies
         run: |
           sudo apt-get update
@@ -140,6 +145,11 @@ jobs:
     steps:
       - uses: actions/checkout@e2f20e631ae6d7dd3b768f56a5d2af784dd54791
 
+      - name: setup fixed Python version for testing
+        uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f
+        with:
+          python-version: '3.12'
+
       - name: install dependencies
         run: |
           brew install emacs