diff --git a/.github/workflows/run_all_tests.yml b/.github/workflows/run_all_tests.yml
index 1935c7392..d11b06d82 100644
--- a/.github/workflows/run_all_tests.yml
+++ b/.github/workflows/run_all_tests.yml
@@ -36,8 +36,8 @@ jobs:
           - { name: windows-python3.12           , test-tox-env: py312           , build-tox-env: build-py312           , python-ver: "3.12", os: windows-latest }
           - { name: windows-python3.12-upgraded  , test-tox-env: py312-upgraded  , build-tox-env: build-py312-upgraded  , python-ver: "3.12", os: windows-latest }
           - { name: windows-python3.12-prerelease, test-tox-env: py312-prerelease, build-tox-env: build-py312-prerelease, python-ver: "3.11", os: windows-latest }
-          - { name: macos-python3.8-minimum      , test-tox-env: py38-minimum    , build-tox-env: build-py38-minimum    , python-ver: "3.8" , os: macos-latest }
-          - { name: macos-python3.9              , test-tox-env: py39            , build-tox-env: build-py39            , python-ver: "3.9" , os: macos-latest }
+          - { name: macos-python3.8-minimum      , test-tox-env: py38-minimum    , build-tox-env: build-py38-minimum    , python-ver: "3.8" , os: macos-13 }
+          - { name: macos-python3.9              , test-tox-env: py39            , build-tox-env: build-py39            , python-ver: "3.9" , os: macos-13 }
           - { name: macos-python3.10             , test-tox-env: py310           , build-tox-env: build-py310           , python-ver: "3.10", os: macos-latest }
           - { name: macos-python3.11             , test-tox-env: py311           , build-tox-env: build-py311           , python-ver: "3.11", os: macos-latest }
           - { name: macos-python3.12             , test-tox-env: py312           , build-tox-env: build-py312           , python-ver: "3.12", os: macos-latest }
@@ -95,7 +95,7 @@ jobs:
           - { name: windows-gallery-python3.8-minimum    , test-tox-env: gallery-py38-minimum    , python-ver: "3.8" , os: windows-latest }
           - { name: windows-gallery-python3.12-upgraded  , test-tox-env: gallery-py312-upgraded  , python-ver: "3.12", os: windows-latest }
           - { name: windows-gallery-python3.12-prerelease, test-tox-env: gallery-py312-prerelease, python-ver: "3.12", os: windows-latest }
-          - { name: macos-gallery-python3.8-minimum      , test-tox-env: gallery-py38-minimum    , python-ver: "3.8" , os: macos-latest }
+          - { name: macos-gallery-python3.8-minimum      , test-tox-env: gallery-py38-minimum    , python-ver: "3.8" , os: macos-13 }
           - { name: macos-gallery-python3.12-upgraded    , test-tox-env: gallery-py312-upgraded  , python-ver: "3.12", os: macos-latest }
           - { name: macos-gallery-python3.12-prerelease  , test-tox-env: gallery-py312-prerelease, python-ver: "3.12", os: macos-latest }
     steps:
diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index d2b3d169a..c0d520429 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -24,7 +24,7 @@ jobs:
           - { name: linux-python3.12-upgraded    , test-tox-env: py312-upgraded  , build-tox-env: build-py312-upgraded , python-ver: "3.12", os: ubuntu-latest , upload-wheels: true }
           - { name: windows-python3.8-minimum    , test-tox-env: py38-minimum    , build-tox-env: build-py38-minimum   , python-ver: "3.8" , os: windows-latest }
           - { name: windows-python3.12-upgraded  , test-tox-env: py312-upgraded  , build-tox-env: build-py312-upgraded , python-ver: "3.12", os: windows-latest }
-          - { name: macos-python3.8-minimum      , test-tox-env: py38-minimum    , build-tox-env: build-py38-minimum   , python-ver: "3.8" , os: macos-latest }
+          - { name: macos-python3.8-minimum      , test-tox-env: py38-minimum    , build-tox-env: build-py38-minimum   , python-ver: "3.8" , os: macos-13 }
     steps:
       - name: Cancel non-latest runs
         uses: styfle/cancel-workflow-action@0.11.0