diff --git a/.github/workflows/ci-osx.yaml b/.github/workflows/ci-osx.yaml
index e76fe050..3de464a0 100644
--- a/.github/workflows/ci-osx.yaml
+++ b/.github/workflows/ci-osx.yaml
@@ -49,7 +49,7 @@ jobs:
         shell: "bash -l {0}"
         run: |
           conda activate env
-          export CC=clang
+          export DISABLE_NUMCODECS_AVX2=""
           python -m pip install -v -e .[test,msgpack,zfpy]
 
       - name: List installed packages