diff --git a/.github/actions/build/python/action.yaml b/.github/actions/build/python/action.yaml
index a6e9120..f3d74e2 100644
--- a/.github/actions/build/python/action.yaml
+++ b/.github/actions/build/python/action.yaml
@@ -5,4 +5,8 @@ runs:
   steps:
     - name: Install project tools and dependencies
       shell: bash
-      run: make project-tools LANGUAGE=python
+      run: |
+        python -m venv .venv
+        . .venv/bin/activate
+        python -m pip install --upgrade pip
+        make project-tools LANGUAGE=python
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 2d2c2d5..6cdf8d5 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -71,19 +71,23 @@ jobs:
       - name: Install Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install core
+          python-version: ${{ matrix.python-version }}          
+      - name: Install sdk
+        working-directory: ./sdk-repo-updated
         run: |
           pip install poetry
           poetry config virtualenvs.create false
-          git clone https://github.com/stackitcloud/stackit-sdk-python-core.git core
-          cd core;make install;
-      - name: Install sdk
-        working-directory: ./sdk-repo-updated
-        run: make install-dev
+          python -m venv .venv          
+          . .venv/bin/activate
+          python -m pip install --upgrade pip
+          make install-dev
       - name: Lint
         working-directory: ./sdk-repo-updated
-        run: make lint
+        run: |
+          . .venv/bin/activate
+          make lint
       - name: Test
         working-directory: ./sdk-repo-updated
-        run: make test
+        run: |
+          . .venv/bin/activate
+          make test
diff --git a/.github/workflows/sdk-pr.yaml b/.github/workflows/sdk-pr.yaml
index 5e4a225..261b0bf 100644
--- a/.github/workflows/sdk-pr.yaml
+++ b/.github/workflows/sdk-pr.yaml
@@ -64,4 +64,10 @@ jobs:
           GH_REPO: "stackitcloud/stackit-sdk-python"
           GH_TOKEN: ${{ secrets.SDK_PR_TOKEN }}
         run: |
+          set -e
+          python -m venv .venv
+          . .venv/bin/activate
+          python -m pip install --upgrade pip
+          pip install poetry
+          poetry config virtualenvs.create false
           scripts/sdk-create-pr.sh "generator-bot-${{ github.run_id }}" "Generated from GitHub run [${{ github.run_id }}](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})" "git@github.com:stackitcloud/stackit-sdk-python.git" "python"