diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 195fde2bb..6ee1d1469 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -408,7 +408,7 @@ jobs:
             CXX: clang++
           - CC: gcc
             CXX: g++
-    runs-on: macos-12
+    runs-on: macos-14
     env:
       CC: ${{ matrix.CC }}
       CXX: ${{ matrix.CXX }}
diff --git a/.github/workflows/posix.yml b/.github/workflows/posix.yml
index ad21f599b..00226c5f6 100644
--- a/.github/workflows/posix.yml
+++ b/.github/workflows/posix.yml
@@ -222,7 +222,7 @@ jobs:
 
   pty-macos:
     name: pty-macos OT_DAEMON=${{ matrix.OT_DAEMON }}
-    runs-on: macos-12
+    runs-on: macos-14
     strategy:
       fail-fast: false
       matrix: