diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index d9712ed..a5bfbc2 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -40,8 +40,8 @@ jobs:
           export CC=${HOMEBREW_PREFIX}/opt/llvm@19/bin/clang
           export CXX=${HOMEBREW_PREFIX}/opt/llvm@19/bin/clang++
           export AR=${HOMEBREW_PREFIX}/opt/llvm@19/bin/llvm-ar
-          export CFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang"
-          export CXXFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang"
+          export CFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
+          export CXXFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
           export LLD=${HOMEBREW_PREFIX}/opt/lld/bin/ld64.lld
           export RUSTFLAGS="-Clinker-plugin-lto -Clinker=$PWD/macos-linker.sh -Clink-arg=-fuse-ld=${LLD}"
           maturin build --release --target aarch64-apple-darwin --out dist -i ${{ matrix.py_version }}
diff --git a/.github/workflows/PR.yml b/.github/workflows/PR.yml
index e546fcf..2d980ce 100644
--- a/.github/workflows/PR.yml
+++ b/.github/workflows/PR.yml
@@ -40,8 +40,8 @@ jobs:
           export CC=${HOMEBREW_PREFIX}/opt/llvm@19/bin/clang
           export CXX=${HOMEBREW_PREFIX}/opt/llvm@19/bin/clang++
           export AR=${HOMEBREW_PREFIX}/opt/llvm@19/bin/llvm-ar
-          export CFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang"
-          export CXXFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang"
+          export CFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
+          export CXXFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk"
           export LLD=${HOMEBREW_PREFIX}/opt/lld/bin/ld64.lld
           export RUSTFLAGS="-Clinker-plugin-lto -Clinker=$PWD/macos-linker.sh -Clink-arg=-fuse-ld=${LLD}"
           maturin build --release --target aarch64-apple-darwin --out dist -i ${{ matrix.py_version }}
diff --git a/justfile b/justfile
index 275faa3..03a313e 100644
--- a/justfile
+++ b/justfile
@@ -8,8 +8,8 @@ develop:
     CC=${HOMEBREW_PREFIX}/opt/llvm/bin/clang \
     CXX=${HOMEBREW_PREFIX}/opt/llvm/bin/clang++ \
     AR=${HOMEBREW_PREFIX}/opt/llvm/bin/llvm-ar \
-    CFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang" \
-    CXXFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang" \
+    CFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" \
+    CXXFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" \
     RUSTFLAGS="-Clinker-plugin-lto -Clinker=$PWD/macos-linker.sh -Clink-arg=-fuse-ld=${HOMEBREW_PREFIX}/opt/lld/bin/ld64.lld" \
     maturin develop --release --verbose
 
@@ -20,8 +20,8 @@ build:
     CC=${HOMEBREW_PREFIX}/opt/llvm/bin/clang \
     CXX=${HOMEBREW_PREFIX}/opt/llvm/bin/clang++ \
     AR=${HOMEBREW_PREFIX}/opt/llvm/bin/llvm-ar \
-    CFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang" \
-    CXXFLAGS="-flto=thin -O3 --config-system-dir=${HOMEBREW_PREFIX}/etc/clang" \
+    CFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" \
+    CXXFLAGS="-flto=thin -O3 --sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk" \
     RUSTFLAGS="-Clinker-plugin-lto -Clinker=$PWD/macos-linker.sh -Clink-arg=-fuse-ld=${HOMEBREW_PREFIX}/opt/lld/bin/ld64.lld" \
     maturin build --release --verbose