diff --git a/.github/workflows/integration-test.yml b/.github/workflows/integration-test.yml
index 5d7fd2d..5e0f854 100644
--- a/.github/workflows/integration-test.yml
+++ b/.github/workflows/integration-test.yml
@@ -32,8 +32,6 @@ jobs:
           cmake ../ -DCMAKE_INSTALL_PREFIX=./install
           make -j
           make install
-          pwd
-          ls ../../
 
       - name: Setup python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -47,11 +45,12 @@ jobs:
 
       - name: Install PySoPlex
         run: |
-          export SOPLEX_DIR=./soplex/build/install
+          export SOPLEX_DIR=${{ runner.workspace }}/soplex/build/install
           python -m pip install .
 
       - name: Run pysoplex tests
         run: |
+          export SOPLEX_DIR=${{ runner.workspace }}/soplex/build/install
           py.test
 
 #  Windows-test:
@@ -93,65 +92,63 @@ jobs:
 #        shell: powershell
 #        run: |
 #          py.test
-#
-#  MacOS-test:
-#    runs-on: macos-latest
-#    strategy:
-#      matrix:
-#        python-version: ["3.8", "3.9", "3.10", "3.11"]
-#    steps:
-#      - uses: actions/checkout@v3
-#
-#      - name: Cache dependencies (SCIPOptSuite)
-#        id: cache-scip
-#        uses: actions/cache@v2
-#        with:
-#          path: |
-#            ${{ runner.workspace }}/scipoptsuite
-#            ~/Library/Caches/Homebrew/tbb--*
-#              /usr/local/opt/tbb*
-#            ~/Library/Caches/Homebrew/downloads/*--tbb-*
-#            ~/Library/Caches/Homebrew/boost--*
-#              /usr/local/opt/boost*
-#            ~/Library/Caches/Homebrew/downloads/*--boost-*
-#          key: ${{ runner.os }}-scipopt-${{ env.version }}-${{ hashFiles('**/lockfiles') }}
-#          restore-keys: |
-#            ${{ runner.os }}-scipopt-${{ env.version }}-
-#
-#      - name: Install dependencies (SCIPOptSuite)
-#        if: steps.cache-scip.outputs.cache-hit != 'true'
-#        run: |
-#          brew install tbb boost bison
-#          wget --quiet --no-check-certificate https://github.com/scipopt/scip/releases/download/$(echo "v${{env.version}}" | tr -d '.')/scipoptsuite-${{ env.version }}.tgz
-#          tar xfz scipoptsuite-${{ env.version }}.tgz
-#          cd scipoptsuite-${{ env.version }}
-#          mkdir build
-#          cd build
-#          cmake .. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=${{ runner.workspace }}/scipoptsuite -DIPOPT=off -DSYM=none -DTPI=tny -DREADLINE=off
-#          make install -j
-#
-#      - name: Setup python ${{ matrix.python-version }}
-#        uses: actions/setup-python@v4
-#        with:
-#          python-version: ${{ matrix.python-version }}
-#
-#      - name: Prepare python environment
-#        run: |
-#          python -m pip install --upgrade pip
-#          python -m pip install networkx pytest-cov pytest
-#
-#      - name: Install PySCIPOpt
-#        run: |
-#          export SCIPOPTDIR=${{ runner.workspace }}/scipoptsuite/
-#          export DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}:${{ runner.workspace }}/scipoptsuite/lib
-#          python -m pip install .
-#
-##      - name: Run pyscipopt tests
-##        run: |
-##          export SCIPOPTDIR=${{ runner.workspace }}/scipoptsuite/
-##          export DYLD_LIBRARY_PATH=${DYLD_LIBRARY_PATH}:${{ runner.workspace }}/scipoptsuite/lib
-##          py.test
-#
+
+  mac-test:
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11"]
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Cache dependencies (soplex)
+        id: cache-soplex
+        uses: actions/cache@v2
+        with:
+          path: |
+            ${{ runner.workspace }}/soplex
+            ~/Library/Caches/Homebrew/git--*
+              /usr/local/opt/git*
+            ~/Library/Caches/Homebrew/downloads/*--git-*
+            ~/Library/Caches/Homebrew/cmake--*
+              /usr/local/opt/cmake*
+            ~/Library/Caches/Homebrew/downloads/*--cmake-*
+          key: ${{ runner.os }}-soplex-${{ env.version }}-${{ hashFiles('**/lockfiles') }}
+          restore-keys: |
+            ${{ runner.os }}-soplex-${{ env.version }}-
+
+      - name: Install dependencies (soplex)
+        if: steps.cache-soplex.outputs.cache-hit != 'true'
+        run: |
+          brew install git cmake
+          git clone -b C_interface_update https://github.com/scipopt/soplex.git
+          cd soplex
+          mkdir build
+          cd build
+          cmake ../ -DCMAKE_INSTALL_PREFIX=./install
+          make -j
+          make install
+
+      - name: Setup python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Prepare python environment
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install cython wheel pytest
+
+      - name: Install PySoPlex
+        run: |
+          export SOPLEX_DIR=${{ runner.workspace }}/soplex/build/install
+          python -m pip install .
+
+      - name: Run pysoplex tests
+        run: |
+          export SOPLEX_DIR=${{ runner.workspace }}/soplex/build/install
+          py.test
+
 #  ### if you need valgrind on mac, you can install it via
 #  # brew tap LouisBrunner/valgrind
 #  # brew install --HEAD LouisBrunner/valgrind/valgrind