diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index a8ac46f..7f58989 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-11.0, macos-10.15]
+        os: [macos-11.0]
     steps:
     - uses: actions/checkout@v2
     - name: Build