diff --git a/.ci_support/run_docker_linux.sh b/.ci_support/run_docker_linux.sh
index 42125e0..5cebf6d 100755
--- a/.ci_support/run_docker_linux.sh
+++ b/.ci_support/run_docker_linux.sh
@@ -7,7 +7,7 @@ pip install -r /io/doc/requirements.txt --break-system-packages
 
 cp -r /io/* /tmp
 cd /tmp
-python setup.py install --user
+pip install . --user --break-system-packages
 ~/.local/bin/mo2fmu -h
 ~/.local/bin/mo2fmu ./otfmi/example/file/deviation.mo ./otfmi/example/file/fmu/linux64/deviation.fmu
 pytest test -s
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1b3c5b7..dd3d504 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -35,7 +35,7 @@ jobs:
         shell: bash -l {0}
         run: |
           conda install -y pyfmi openturns pytest jinja2 omcompiler
-          python setup.py install
+          pip install .
           mo2fmu -h
           mo2fmu ./otfmi/example/file/deviation.mo ./otfmi/example/file/fmu/linux64/deviation.fmu
           pytest test -s
@@ -53,7 +53,7 @@ jobs:
           $env:PATH += ";C:\Program Files\OpenModelica1.21.0-64bit\bin"
           omc --version
           conda install -y pyfmi openturns pytest jinja2
-          python setup.py install
+          pip install .
           mo2fmu -h
           pytest test -s