diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 740bd4e7..ff3e4ae8 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macOS-13]
+        os: [macOS-11]
         python-version: ["3.10"]
 
     steps: