Switch testing environment from macos-latest to macos-10.15. This is …

…to retain support for Python 3.6.
sscpac · Oct 12, 2021 · e8eb3bb · e8eb3bb
2 parents e921182 + 43dd594
commit e8eb3bb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-latest, ubuntu-18.04, ubuntu-20.04, windows-latest]
+        os: [macos-10.15, ubuntu-18.04, ubuntu-20.04, windows-latest]
         python-version: [3.6, 3.7, 3.8, 3.9, 3.10.0-rc.2]
 
     steps: