diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4abc4b78..86347af4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -81,7 +81,6 @@ jobs:
               compiler: clang-12,  cxxstd: '03,11,14,17,20', os: ubuntu-20.04, stdlib: libc++, install: 'clang-12 libc++-12-dev libc++abi-12-dev' }
 
           # OSX, clang
-          - { compiler: clang,     cxxstd: '03,11,14,17,2a',    os: macos-11 }
           - { compiler: clang,     cxxstd: '03,11,14,17,20',    os: macos-12 }
           - { name: MacOS w/ clang and sanitizers,
               compiler: clang,     cxxstd: '03,11,14,17,20,2b', os: macos-13, sanitize: yes }