diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 32618b0..5de537a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -18,7 +18,7 @@
       fail-fast: false
       matrix:
         os:
-          - macos-13
+          - macos-11
           - macos-12
     runs-on: ${{matrix.os}}
     steps: