diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 566a63e..4126385 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -138,6 +138,56 @@ jobs:
         run: |
             cd build && ctest --output-on-failure
 
+#  build-osx-13-arm64:
+#    runs-on: macos-13-arm64
+#    strategy:
+#      matrix:
+#        standard: ['11', '14', '17', '20']
+#        unreleased: ['ON', 'OFF']
+#    steps:
+#      - name: Checkout
+#        uses: actions/checkout@v3
+#        with:
+#          submodules: true
+#      - name: Install
+#        run: |
+#            brew install boost
+#      - name: Configure
+#        run: |
+#            mkdir build && cd build
+#            cmake .. -Dtoml11_BUILD_TEST=ON -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_USE_UNRELEASED_TOML_FEATURES=${{ matrix.unreleased }}
+#      - name: Build
+#        run: |
+#            cd build && cmake --build .
+#      - name: Test
+#        run: |
+#            cd build && ctest --output-on-failure
+
+  build-osx-13:
+    runs-on: macos-13
+    strategy:
+      matrix:
+        standard: ['11', '14', '17', '20']
+        unreleased: ['ON', 'OFF']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - name: Install
+        run: |
+            brew install boost
+      - name: Configure
+        run: |
+            mkdir build && cd build
+            cmake .. -Dtoml11_BUILD_TEST=ON -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_USE_UNRELEASED_TOML_FEATURES=${{ matrix.unreleased }}
+      - name: Build
+        run: |
+            cd build && cmake --build .
+      - name: Test
+        run: |
+            cd build && ctest --output-on-failure
+
   build-osx-12:
     runs-on: macos-12
     strategy:
diff --git a/toml/exception.hpp b/toml/exception.hpp
index 927d791..81c6401 100644
--- a/toml/exception.hpp
+++ b/toml/exception.hpp
@@ -37,13 +37,13 @@ inline std::string str_error(int errnum)
     {
         return std::string(buf.data());
     }
-#elif defined(_GNU_SOURCE)
+#elif defined(_GNU_SOURCE) && !(defined(__DARWIN_C_LEVEL) && __DARWIN_C_LEVEL >= 200112L )
     constexpr std::size_t bufsize = 256;
     std::array<char, bufsize> buf;
     buf.fill('\0');
     const char* result = strerror_r(errnum, buf.data(), bufsize);
     return std::string(result);
-#elif (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 600)
+#elif (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L) || (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 600) || ( defined(__DARWIN_C_LEVEL) && __DARWIN_C_LEVEL >= 200112L ) // macOS 
     constexpr std::size_t bufsize = 256;
     std::array<char, bufsize> buf;
     buf.fill('\0');