diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d600075b..f7fdc23f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -90,7 +90,7 @@ jobs:
   nix-master:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-13]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4