diff --git a/.github/workflows/build_macos.yml b/.github/workflows/build_macos.yml
index 9845214a..5f778df7 100644
--- a/.github/workflows/build_macos.yml
+++ b/.github/workflows/build_macos.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-12, macos-11]
+        os: [macos-12]
         build_type: [Debug, Release]
     runs-on: ${{ matrix.os }}