diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 997de6799..5dbb57a40 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-13, windows-latest]
         cc: ["gcc", "clang"]
         codegen: ["amd64", "c", "llvm"]
         exclude: