diff --git a/.github/workflows/macos_gcc.yml b/.github/workflows/macos_gcc.yml
index 331d1c63..3fd58c9d 100644
--- a/.github/workflows/macos_gcc.yml
+++ b/.github/workflows/macos_gcc.yml
@@ -12,7 +12,7 @@ jobs:
           build_type: 'Release'
           flags: '-std=c++23 -msse2 -DLIBCPP_TEST_DEDUCTION_GUIDES'
           path_prefix: '/usr/local'
-          macos_ver: '12'
+          macos_ver: '13'
 
         # macOS-14-arm64
         - gcc_ver: '11'
diff --git a/.github/workflows/win_clang.yml b/.github/workflows/win_clang.yml
index df3814ec..658a9168 100644
--- a/.github/workflows/win_clang.yml
+++ b/.github/workflows/win_clang.yml
@@ -4,6 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build-and-test:
+    if: ${{ false }}
     strategy:
       matrix:
         include: