diff --git a/.github/workflows/config.yml b/.github/workflows/config.yml
index 075e703f..6379b93c 100644
--- a/.github/workflows/config.yml
+++ b/.github/workflows/config.yml
@@ -158,7 +158,7 @@ jobs:
 
 
   osx:
-    runs-on: macos-latest
+    runs-on: macos-13  # https://github.com/actions/runner-images/blob/main/images/macos/macos-13-Readme.md
     timeout-minutes: 60
     steps:
       - name: Checkout