diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 6576857e3..669e12c74 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        osver: [12, 13, 14, 15]
+        osver: [13, 14, 15]
     steps:
       - uses: actions/checkout@v4
 
diff --git a/README.md b/README.md
index 5caed29e2..08d69ecdf 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ If your environment is not included in the released packages, you have to build
 
 * GCC: `12` or later
 * Clang: `15` or later
-* Apple Clang: provided by `macOS Monterey (12)` or later
+* Apple Clang: provided by `macOS Ventura (13)` or later
 
 #### Commands