diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d6c2525a..493c6513 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -219,7 +219,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-11, windows-latest]
         python-version: ['3.10']
 
     steps: