diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index cc1abe9..9d90565 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -18,15 +18,21 @@ jobs:
     strategy:
       matrix:
         python-version: ["2.7", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
-        os: [ windows-latest, macos-latest, ubuntu-20.04 ]
+        os: [ windows-latest, macos-13, ubuntu-20.04 ]
+        exclude:
+          - os: windows-latest
+            python-version: "2.7"
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
+
     - name: Set up Python ${{ matrix.python-version }}
       if: matrix.python-version != '2.7'
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+      env:
+        PIP_TRUSTED_HOST: "pypi.python.org pypi.org files.pythonhosted.org"
 
     - name: Set up Python 2.7
       if: matrix.python-version == '2.7'
@@ -57,10 +63,10 @@ jobs:
     if: startsWith(github.ref, 'refs/tags')
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: '3.x'