diff --git a/.github/workflows/build_run-tests.yml b/.github/workflows/build_run-tests.yml
index 38f771fae6..4cebb4bcc0 100644
--- a/.github/workflows/build_run-tests.yml
+++ b/.github/workflows/build_run-tests.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   on-macos:
-    runs-on: macos-latest
+    runs-on: macos-13
     strategy:
       matrix:
         python-version: ["3.11"]