diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4600227..9eeed6b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, windows-2022]
+        os: [macos-11, windows-2022]
 
     # create steps
     steps: