diff --git a/.github/workflows/brew.yml.bak b/.github/workflows/brew.yml.bak
index aef0efb..ebd8224 100644
--- a/.github/workflows/brew.yml.bak
+++ b/.github/workflows/brew.yml.bak
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14, macos-13, macos-12]
+        os: [macos-15, macos-14, macos-13]
 
     runs-on: ${{ matrix.os }}
 
@@ -144,7 +144,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14, macos-13, macos-12]
+        os: [macos-15, macos-14, macos-13]
 
     runs-on: ${{ matrix.os }}
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0e343d7..256f0f7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        runs-on: [macos-15, macos-14, macos-13, macos-12]
+        runs-on: [macos-15, macos-14, macos-13]
         target-platform:
           - MacOSX-10.15-x86_64
           - MacOSX-11.0-x86_64