diff --git a/.github/workflows/test_mac.yml b/.github/workflows/test_mac.yml
index eb176743..f4621123 100644
--- a/.github/workflows/test_mac.yml
+++ b/.github/workflows/test_mac.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Python Setup
         uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.11"
           architecture: x64
       - name: Install Packages (brew)
         run: |
diff --git a/.github/workflows/test_win.yml b/.github/workflows/test_win.yml
index 09d935ea..c03700bc 100644
--- a/.github/workflows/test_win.yml
+++ b/.github/workflows/test_win.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Python Setup
         uses: actions/setup-python@v5
         with:
-          python-version: "3.12"
+          python-version: "3.11"
           architecture: x64
       - name: Checkout Source
         uses: actions/checkout@v4