From 43dd59473dd75213b9acf9c7581a91750d86baae Mon Sep 17 00:00:00 2001
From: Thomas Denewiler <tdenewiler@gmail.com>
Date: Tue, 12 Oct 2021 09:27:04 -0700
Subject: [PATCH] Switch testing environment from macos-latest to macos-10.15.
 This is to retain support for Python 3.6.

---
 .github/workflows/tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 602f43a..dc12f51 100644
--- 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: