diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
index 3f566c4..e9944c7 100644
--- a/.github/workflows/swift.yml
+++ b/.github/workflows/swift.yml
@@ -9,7 +9,7 @@ on:
 jobs:
   build:
 
-    runs-on: macos-12
+    runs-on: macos-11
 
     steps:
     - uses: actions/checkout@v3