diff --git a/.github/workflows/test-python-api-mac.yml b/.github/workflows/test-python-api-mac.yml
index 804cab285d..967dd42cab 100644
--- a/.github/workflows/test-python-api-mac.yml
+++ b/.github/workflows/test-python-api-mac.yml
@@ -31,6 +31,7 @@ jobs:
           HIGHS_LIB_DIR=${{runner.workspace}}/build/lib
           echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HIGHS_LIB_DIR" >> $GITHUB_ENV
           echo "DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:$HIGHS_LIB_DIR" >> $GITHUB_ENV
+          echo "PYTHONPATH=$PYTHONPATH:$HIGHS_LIB_DIR" >> $GITHUB_ENV
 
       - name: Install correct python version
         uses: actions/setup-python@v3