diff --git a/.github/workflows/ccp-workflow.yml b/.github/workflows/ccp-workflow.yml
index 53baac3..3ec3330 100644
--- a/.github/workflows/ccp-workflow.yml
+++ b/.github/workflows/ccp-workflow.yml
@@ -51,7 +51,7 @@ jobs:
       fail-fast: false
       matrix:
         include: [
-          { system: MacOS,          runner: macos-14 },
+          { system: MacOS,          runner: macos-13 },
           { system: Ubuntu-latest,  runner: ubuntu-latest },
         ]
     name: ${{ matrix.system }} Test