diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ff2b039..6c9efc2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,7 +5,7 @@ jobs:
     name: Build & test
     runs-on:
       - ubuntu-latest
-      - macos-13
+      - macos-12
 
     container: httptoolkit/act-build-base:v3.0.1