diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 09ffb14..d39a3f0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
   test-bot:
     strategy:
       matrix:
-        os: [macos-10.15, macos-11.0]
+        os: [macos-10.15]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Set up Homebrew