diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 268abfc1..3a7e1342 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -13,6 +13,22 @@ jobs:
       matrix:
         python: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
         platform: [ubuntu-latest, macos-latest, windows-latest]
+        # Python <= 3.9 is not available on macos-14
+        # Workaround for https://github.com/actions/setup-python/issues/696
+        exclude:
+        - platform: macos-latest
+          python: '3.9'
+        - platform: macos-latest
+          python: '3.8'
+        - platform: macos-latest
+          python: '3.7'
+        include:
+        - platform: macos-latest
+          python: '3.9'
+        - platform: macos-13
+          python: '3.8'
+        - platform: macos-13
+          python: '3.7'
     runs-on: ${{ matrix.platform }}
     steps:
     - name: Harden Runner