diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e5b2a2..c8127d1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
           - '1.6'  # lowest declared compat in `Project.toml`
           - '1'
           # - 'nightly'
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-13]
         arch:
           - x64
           # - x86