diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 603d95b..ac89fc3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,8 @@ jobs:
     strategy:
       matrix:
         nim: [2.2.4]
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        # cmake too new on newer macos, leveldb build breaks
+        os: [ubuntu-latest, macOS-14, windows-latest]
     steps:
     - name: Checkout
       uses: actions/checkout@v4