GitHub Actions: macOS 13 runner image is closing down

https://github.blog/changelog/2025-09-19-github-actions-macos-13-runner-image-is-closing-down/

macos-13 → macos-14

Author: DimitriPapadopoulos

.github/workflows/test.yml

@@ -112,7 +112,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ['ubuntu-latest', 'windows-latest', 'macos-13', 'macos-latest']
+        os: ['ubuntu-latest', 'windows-latest', 'macos-14', 'macos-latest']
         python-version:
           - "3.9"
           - "3.10"
@@ -153,16 +153,14 @@ jobs:
             python-version: "3.13"
           - os: windows-latest
             python-version: "3.13t"
-          - os: macos-13
+          - os: macos-14
+            python-version: "3.9"
+          - os: macos-14
             python-version: "3.10"
-          - os: macos-13
-            python-version: "3.11"
-          - os: macos-13
-            python-version: "3.12"
-          - os: macos-13
-            python-version: "3.13"
-          - os: macos-13
-            python-version: "3.13t"
+          - os: macos-14
+            python-version: "3.14"
+          - os: macos-14
+            python-version: "3.14t"
           - os: macos-latest
             python-version: "3.10"
           - os: macos-latest
@@ -178,24 +176,22 @@ jobs:
           # x86 is available for Windows
           - os: ubuntu-latest
             architecture: x86
-          - os: macos-latest
+          - os: macos-14
             architecture: x86
-          - os: macos-13
+          - os: macos-latest
             architecture: x86
           # arm64 is available for macos-14+
           - os: ubuntu-latest
             architecture: arm64
           - os: windows-latest
             architecture: arm64
-          - os: macos-13
-            architecture: arm64
-          # x64 is not available for macos-14+
+          # x64 is not available for macos-15
           - os: macos-latest
             architecture: x64
 
           ## Reduced support
-          # Drop pre tests for macos-13
-          - os: macos-13
+          # Drop pre tests for macos-14
+          - os: macos-14
             dependencies: pre
           # Drop pre tests for SPEC-0-unsupported Python versions
           - python-version: '3.9'