diff --git a/.github/workflows/full_test.yml b/.github/workflows/full_test.yml
index 2a98cc3..bbb7fde 100644
--- a/.github/workflows/full_test.yml
+++ b/.github/workflows/full_test.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-22.04, windows-2022, macos-11]
+        os: [macos-11]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/pyproject.toml b/pyproject.toml
index 7a48339..6780ae1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,8 +44,6 @@ Homepage = "http://github.com/gedaskir/qmeq"
 
 [tool.cibuildwheel]
 build = [
-    "cp38-*",
-    "cp39-*",
     "cp310-*",
     "cp311-*",
     "cp312-*"
diff --git a/scripts/cibw_before_all_macos.sh b/scripts/cibw_before_all_macos.sh
index 83e560f..b583388 100644
--- a/scripts/cibw_before_all_macos.sh
+++ b/scripts/cibw_before_all_macos.sh
@@ -4,3 +4,8 @@ set -e -x
 ln -sf /usr/local/bin/gcc-10 /usr/local/bin/gcc
 
 gcc --version
+
+# ln -sf $(brew --prefix llvm@15)/bin/clang /usr/local/bin/clang
+ln -sf /usr/local/bin/gcc-10 /usr/local/bin/clang
+
+clang --version