diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5bc83ead..18ff7d6b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ concurrency:
 
 jobs:
   build:
-    runs-on: macos-latest
+    runs-on: macos-12
     env:
       DERIVED_DATA: $HOME/.DerivedData