diff --git a/.github/workflows/macosx-clang-mpich.yml b/.github/workflows/macosx-clang-mpich.yml
index b30e82c0c7..2f7244ad98 100644
--- a/.github/workflows/macosx-clang-mpich.yml
+++ b/.github/workflows/macosx-clang-mpich.yml
@@ -1,4 +1,4 @@
-name: PR tests (clang-14, macosx, mpich)
+name: PR tests (clang-15, macosx, mpich)
 
 # Trigger the workflow on push or pull request
 on:
@@ -15,7 +15,7 @@ concurrency:
 
 jobs:
   build:
-    runs-on: macos-12
+    runs-on: macos-14
 
     if: github.event.pull_request.draft == false
 
@@ -36,14 +36,14 @@ jobs:
       - uses: actions/cache@v4
         with:
           path: ~/.ccache
-          key: ${{ runner.os }}-macosx-clang-14-ccache-${{ secrets.GH_ACTIONS_CACHE_VERSION }}-${{ hashFiles('**/*') }}
+          key: ${{ runner.os }}-macosx-clang-15-ccache-${{ secrets.GH_ACTIONS_CACHE_VERSION }}-${{ hashFiles('**/*') }}
           restore-keys: |
-            ${{ runner.os }}-macosx-clang-14-ccache-${{ secrets.GH_ACTIONS_CACHE_VERSION }}
+            ${{ runner.os }}-macosx-clang-15-ccache-${{ secrets.GH_ACTIONS_CACHE_VERSION }}
       - uses: actions/cache@v4
         id: mpich-cache
         with:
           path: ~/.mpich
-          key: ${{ runner.os }}-macosx-clang-14-mpich-${{ hashFiles('**/.github/workflows/macosx-clang-mpich.yml', '**/ci/deps/mpich.sh') }}
+          key: ${{ runner.os }}-macosx-clang-15-mpich-${{ hashFiles('**/.github/workflows/macosx-clang-mpich.yml', '**/ci/deps/mpich.sh') }}
       - name: Install Dependencies
         shell: bash
         run: brew bundle --file=ci/Brewfile