diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9ef6e75..ba9cdeb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
   build-macOS:
     strategy:
       matrix:
-        os: [ macos-12, macos-13, macos-14 ]
+        os: [ macos-13, macos-14, macos-15 ]
       fail-fast: false
     name: "Build ${{ matrix.os }}"
     runs-on: ${{ matrix. os }}
@@ -86,7 +86,7 @@ jobs:
   build-doc-macOS:
     strategy:
       matrix:
-        os: [ macos-12, macos-13, macos-14 ]
+        os: [ macos-13, macos-14, macos-15 ]
       fail-fast: false
     name: "Build doc: ${{ matrix.os }}"
     runs-on: ${{ matrix.os }}
@@ -213,7 +213,7 @@ jobs:
   test-macOS:
     strategy:
       matrix:
-        os: [ macos-12, macos-13, macos-14 ]
+        os: [ macos-13, macos-14, macos-15 ]
       fail-fast: false
     name: "Test ${{ matrix.os }}"
     runs-on: ${{ matrix. os }}