diff --git a/.github/workflows/build_wheel.yml b/.github/workflows/build_wheel.yml
index f71943cd..b1f88473 100644
--- a/.github/workflows/build_wheel.yml
+++ b/.github/workflows/build_wheel.yml
@@ -29,13 +29,13 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.10
 
       - name: Build wheel
         run: |
             pip install wheel
             python setup.py bdist_wheel
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           path: nrtest-swmm/dist/*.whl
 
@@ -46,8 +46,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-2022, macos-12]
-        pyver: [cp38, cp39, cp310, cp311, cp312]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        pyver: [cp39, cp310, cp311, cp312]
 
     steps:
       - name: Checkout repo
@@ -56,7 +56,7 @@ jobs:
             submodules: true
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.17.0
+        uses: pypa/cibuildwheel@v3.1.4
         with:
           package-dir: ./swmm-toolkit
         env:
@@ -80,7 +80,7 @@ jobs:
           CIBW_TEST_SKIP: "*-*linux_{aarch64,ppc64le,s390x} *-macosx_arm64 *-macosx_universal2:arm64"
           CIBW_BUILD_VERBOSITY: 1
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           path: ./wheelhouse/*.whl
 
@@ -105,7 +105,7 @@ jobs:
           platforms: all
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.17.0
+        uses: pypa/cibuildwheel@v3.1.4
         with:
           package-dir: ./swmm-toolkit
         env:
@@ -118,7 +118,7 @@ jobs:
           # only build current supported python: https://devguide.python.org/versions/
           # don't build pypy or musllinux to save build time. TODO: find a good way to support those archs
           CIBW_BUILD: ${{matrix.pyver}}-*
-          CIBW_SKIP: cp36-* cp37-* pp* *-musllinux*
+          CIBW_SKIP: cp36-* cp37-* cp-*38 pp* *-musllinux*
           CIBW_BUILD_VERBOSITY: 1
 
       - uses: actions/upload-artifact@v4
diff --git a/.github/workflows/unit_test.yml b/.github/workflows/unit_test.yml
index c496033f..ae4fbdd0 100644
--- a/.github/workflows/unit_test.yml
+++ b/.github/workflows/unit_test.yml
@@ -21,14 +21,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-2022, macos-12, ubuntu-latest]
+        os: [windows-latest, ubuntu-latest, macos-latest]
         include:
-          - os: windows-2022
-            sys_pkgs: choco install swig
+          - os: windows-latest
             activate: ./build-env/Scripts/activate
 
-          - os: macos-12
-            sys_pkgs: brew install swig ninja
+          - os: macos-latest
             activate: source ./build-env/bin/activate
           
           - os: ubuntu-latest
@@ -36,17 +34,14 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: true
 
       - name: Install Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
-
-      - name: Install required system packages
-        run: ${{matrix.sys_pkgs}}
+          python-version: "3.10"
 
       - name: Build wheel in virtual env
         run: |
@@ -60,4 +55,4 @@ jobs:
         run: |
           pip install -r test-requirements.txt
           pip install --no-index --find-links=./dist swmm_toolkit
-          pytest
\ No newline at end of file
+          pytest
diff --git a/swmm-toolkit/build-requirements.txt b/swmm-toolkit/build-requirements.txt
index cc5fbd1a..3c429ed6 100644
--- a/swmm-toolkit/build-requirements.txt
+++ b/swmm-toolkit/build-requirements.txt
@@ -5,4 +5,5 @@ setuptools   == 65.5.1
 wheel        == 0.38.1
 scikit-build == 0.11.1
 cmake        == 3.21
-swig         == 4.0.2
\ No newline at end of file
+swig         == 4.0.2
+ninja; sys_platform == "darwin"
diff --git a/swmm-toolkit/setup.py b/swmm-toolkit/setup.py
index 846887ca..75d06a27 100644
--- a/swmm-toolkit/setup.py
+++ b/swmm-toolkit/setup.py
@@ -88,7 +88,7 @@ def run(self):
     cmake_args = ["-GVisual Studio 17 2022","-Ax64"]
 
 elif platform_system == "Darwin":
-    cmake_args = ["-GNinja","-DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.9"]
+    cmake_args = ["-GNinja","-DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=11.0"]
 
 else:
     cmake_args = ["-GUnix Makefiles"]
diff --git a/swmm-toolkit/src/swmm/toolkit/CMakeLists.txt b/swmm-toolkit/src/swmm/toolkit/CMakeLists.txt
index 99097ccb..d87a9b4b 100644
--- a/swmm-toolkit/src/swmm/toolkit/CMakeLists.txt
+++ b/swmm-toolkit/src/swmm/toolkit/CMakeLists.txt
@@ -74,7 +74,7 @@ target_link_libraries(output
 set_target_properties(output
     PROPERTIES
         SUFFIX ${PYTHON_SUFFIX}
-        SWIG_COMPILE_DEFINITIONS EXPORT_OUT_API
+        SWIG_COMPILE_DEFINITIONS EXPORT_OUT_API=
         MACOSX_RPATH TRUE
         SKIP_BUILD_RPATH FALSE
         BUILD_WITH_INSTALL_RPATH FALSE
@@ -139,7 +139,7 @@ target_link_libraries(solver
 set_target_properties(solver
     PROPERTIES
         SUFFIX ${PYTHON_SUFFIX}
-        SWIG_COMPILE_DEFINITIONS EXPORT_TOOLKIT
+        SWIG_COMPILE_DEFINITIONS EXPORT_TOOLKIT=
         MACOSX_RPATH TRUE
         SKIP_BUILD_RPATH FALSE
         BUILD_WITH_INSTALL_RPATH FALSE