diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7cea3c27..7ed18f40 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        os: [macos-10.15, macos-11]
+        os: [macos-10.15]
         python-version: [3.7, 3.8, 3.9]
 
     steps: