diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index e4c78bf67..e519164ec 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -25,15 +25,15 @@ jobs:
         # Github Actions requires a single row to be added to the build matrix.
         # See https://help.github.com/en/articles/workflow-syntax-for-github-actions.
         name: [
-          macos-12-xcode-14.2,
+          macos-13-xcode-14.2,
           macos-14-xcode-15.4,
         ]
 
         build_type: [Debug, Release]
         build_unstable: [ON]
         include:
-          - name: macos-12-xcode-14.2
-            os: macos-12
+          - name: macos-13-xcode-14.2
+            os: macos-13
             compiler: xcode
             version: "14.2"
 
diff --git a/.github/workflows/build-python.yml b/.github/workflows/build-python.yml
index f581a5974..24a7f6c90 100644
--- a/.github/workflows/build-python.yml
+++ b/.github/workflows/build-python.yml
@@ -30,7 +30,7 @@ jobs:
           [
             ubuntu-20.04-gcc-9,
             ubuntu-20.04-clang-9,
-            macos-12-xcode-14.2,
+            macos-13-xcode-14.2,
             macos-14-xcode-15.4,
             windows-2022-msbuild,
           ]
@@ -48,8 +48,8 @@ jobs:
             compiler: clang
             version: "9"
 
-          - name: macos-12-xcode-14.2
-            os: macos-12
+          - name: macos-13-xcode-14.2
+            os: macos-13
             compiler: xcode
             version: "14.2"