diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index cff97a6..ae4b692 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -43,7 +43,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-latest", "macos-latest"]
+        os: ["ubuntu-latest", "macos-13"]
         python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     name: ${{ matrix.os }} with Python ${{ matrix.python-version }}