diff --git a/.github/workflows/pr-python-pypy.yml b/.github/workflows/pr-python-pypy.yml
index 6f683c57..c1a6c7cf 100644
--- a/.github/workflows/pr-python-pypy.yml
+++ b/.github/workflows/pr-python-pypy.yml
@@ -3,13 +3,13 @@ on:
   workflow_dispatch:
     inputs:
       tox-env:
-        description: 'Tox Env to run on the PyPy Infra'
+        description: "Tox Env to run on the PyPy Infra"
         required: false
-        default: 'pypy37'
+        default: "pypy37"
       pypy-version:
-        description: 'Version of PyPy to use'
+        description: "Version of PyPy to use"
         required: false
-        default: 'pypy-3.7'
+        default: "pypy-3.7"
 jobs:
   testPyPy:
     name: ut-${{ matrix.config.tox-env }}-${{ matrix.os }}
@@ -17,9 +17,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        # os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         config:
-          - { python-version: "${{ github.event.inputs.pypy-version }}", tox-env: "${{ github.event.inputs.tox-env }}" }
+          - {
+              python-version: "${{ github.event.inputs.pypy-version }}",
+              tox-env: "${{ github.event.inputs.tox-env }}",
+            }
     steps:
       - name: Checkout the Repository
         uses: actions/checkout@v2
@@ -34,4 +38,4 @@ jobs:
           action: tests
           test-additional-args: "-e=${{ matrix.config.tox-env }}"
           experimental-ignore-error: "true"
-          command-timeout: '600000'
+          command-timeout: "600000"
diff --git a/.github/workflows/pr-python37.yml b/.github/workflows/pr-python37.yml
index c1a53112..2a99c409 100644
--- a/.github/workflows/pr-python37.yml
+++ b/.github/workflows/pr-python37.yml
@@ -14,7 +14,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+#         os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         config:
           - { python-version: 3.7, tox-env: py37 }
           - { python-version: 3.7, tox-env: py37-no-ext }
diff --git a/.github/workflows/pr-python38.yml b/.github/workflows/pr-python38.yml
index 88745bee..7e7b6f09 100644
--- a/.github/workflows/pr-python38.yml
+++ b/.github/workflows/pr-python38.yml
@@ -14,10 +14,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        # os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         config:
-          - { python-version: 3.8, tox-env: py38}
-          - { python-version: 3.8, tox-env: py38-no-ext}
+          - { python-version: 3.8, tox-env: py38 }
+          - { python-version: 3.8, tox-env: py38-no-ext }
     steps:
       - name: Checkout the Repository
         uses: actions/checkout@v2
@@ -31,4 +32,4 @@ jobs:
           test-infra-version: latest
           action: tests
           test-additional-args: "-e=${{ matrix.config.tox-env }}"
-          test-failure-retry: "3"
\ No newline at end of file
+          test-failure-retry: "3"
diff --git a/.github/workflows/pr-python39.yml b/.github/workflows/pr-python39.yml
index 6f96a827..1665d7f6 100644
--- a/.github/workflows/pr-python39.yml
+++ b/.github/workflows/pr-python39.yml
@@ -14,10 +14,21 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        # os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         config:
-          - { python-version: 3.9, tox-env: py39, ignore-error-flake: "false", command-timeout: '0'}
-          - { python-version: 3.9, tox-env: py39-no-ext, ignore-error-flake: "true", command-timeout: '600000'}
+          - {
+              python-version: 3.9,
+              tox-env: py39,
+              ignore-error-flake: "false",
+              command-timeout: "0",
+            }
+          - {
+              python-version: 3.9,
+              tox-env: py39-no-ext,
+              ignore-error-flake: "true",
+              command-timeout: "600000",
+            }
     steps:
       - name: Checkout the Repository
         uses: actions/checkout@v2