diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5b77c0b..a95c156 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
   simple-build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-11.0]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2