diff --git a/.github/workflows/analysis-coverage.yml b/.github/workflows/analysis-coverage.yml
index 66198673..c018a224 100644
--- a/.github/workflows/analysis-coverage.yml
+++ b/.github/workflows/analysis-coverage.yml
@@ -22,7 +22,7 @@ on:
 
 jobs:
   analysis:
-    runs-on: macos-12
+    runs-on: macos-13
     name: Analysis
 
     steps:
@@ -122,7 +122,7 @@ jobs:
           verbose: true
 
   coverage-macos:
-    runs-on: macos-12
+    runs-on: macos-13
     name: Coverage(macOS) • 🐍3.10
     env:
       TEST_DECODE_THREADS: 0    # This test fails on GitHub on macOS. We have such enabled test on Cirrus.
@@ -306,7 +306,7 @@ jobs:
         run: sudo -H PH_LIGHT_ACTION=1 EXP_PH_LIBHEIF_VERSION="" python3 -m pytest
 
   coverage-import-error:
-    runs-on: macos-12
+    runs-on: macos-13
     name: Coverage(ImportError)
 
     steps:
diff --git a/.github/workflows/test-src-build-macos.yml b/.github/workflows/test-src-build-macos.yml
index f268ffe8..a5104364 100644
--- a/.github/workflows/test-src-build-macos.yml
+++ b/.github/workflows/test-src-build-macos.yml
@@ -30,7 +30,7 @@ concurrency:
 jobs:
   full_macos_11:
     name: macOS:11-x86_64
-    runs-on: macos-11
+    runs-on: macos-13
     env:
       TEST_DECODE_THREADS: 0    # This test fails on GitHub on macOS. We have such enabled test on Cirrus.
       PH_FULL_ACTION: 1
@@ -54,7 +54,7 @@ jobs:
 
   lite_macos_11:
     name: macOS:11-x86_64(Pi-Heif)
-    runs-on: macos-11
+    runs-on: macos-13
     env:
       TEST_DECODE_THREADS: 0
       PH_LIGHT_ACTION: 1
diff --git a/.github/workflows/test-wheels-pi_heif.yml b/.github/workflows/test-wheels-pi_heif.yml
index 6347824a..9b2995c3 100644
--- a/.github/workflows/test-wheels-pi_heif.yml
+++ b/.github/workflows/test-wheels-pi_heif.yml
@@ -105,7 +105,7 @@ jobs:
 
   macos-wheels:
     name: macOS • 11 • ${{ matrix.python-version }}
-    runs-on: macos-11
+    runs-on: macos-13
     strategy:
       fail-fast: false
       matrix:
@@ -170,7 +170,7 @@ jobs:
 
   macos-projects-together:
     name: macOS • Together • ${{ matrix.python-version }}
-    runs-on: macos-12
+    runs-on: macos-13
     strategy:
       matrix:
         python-version: ["pypy-3.9", "3.9"]
diff --git a/.github/workflows/test-wheels.yml b/.github/workflows/test-wheels.yml
index 39f01281..1441549b 100644
--- a/.github/workflows/test-wheels.yml
+++ b/.github/workflows/test-wheels.yml
@@ -100,7 +100,7 @@ jobs:
 
   macos-wheels:
     name: macOS • 11 • ${{ matrix.python-version }}
-    runs-on: macos-11
+    runs-on: macos-13
     strategy:
       matrix:
         python-version: ["pypy-3.8", "pypy-3.9", "pypy-3.10", "3.8", "3.9", "3.10", "3.11", "3.12"]
diff --git a/.github/workflows/wheels-pi_heif.yml b/.github/workflows/wheels-pi_heif.yml
index ff55e16f..edd0d7de 100644
--- a/.github/workflows/wheels-pi_heif.yml
+++ b/.github/workflows/wheels-pi_heif.yml
@@ -93,7 +93,7 @@ jobs:
 
   wheels_macos:
     name: macosx • x86_64
-    runs-on: macos-11
+    runs-on: macos-13
 
     steps:
       - uses: actions/checkout@v4
@@ -318,7 +318,7 @@ jobs:
 
   sdist:
     name: Source distribution
-    runs-on: macos-12
+    runs-on: macos-13
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/wheels-pillow_heif.yml b/.github/workflows/wheels-pillow_heif.yml
index b49a65e4..01bd8d84 100644
--- a/.github/workflows/wheels-pillow_heif.yml
+++ b/.github/workflows/wheels-pillow_heif.yml
@@ -89,7 +89,7 @@ jobs:
 
   wheels_macos:
     name: macosx • x86_64
-    runs-on: macos-11
+    runs-on: macos-13
 
     steps:
       - uses: actions/checkout@v4
@@ -255,7 +255,7 @@ jobs:
 
   sdist:
     name: Source distribution
-    runs-on: macos-12
+    runs-on: macos-13
 
     steps:
       - uses: actions/checkout@v4