diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 79c4aec..1179407 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,7 +2,7 @@ name: build
 on: [push, pull_request]
 jobs:
   build:
-    runs-on: macos-latest
+    runs-on: macos-13
     steps:
     - run: sw_vers
     - uses: actions/checkout@v4