diff --git a/.github/actions/poetrybuild/action.yaml b/.github/actions/poetrybuild/action.yaml
index 52d83a5..b5f4a20 100644
--- a/.github/actions/poetrybuild/action.yaml
+++ b/.github/actions/poetrybuild/action.yaml
@@ -17,12 +17,11 @@ inputs:
 runs:
   using: "composite"
   steps:
+    - name: Add pipx to PATH
+      run: echo "/root/.local/bin" >> ${GITHUB_PATH}
     - name: Install poetry
       run: pipx install poetry
       shell: bash
-    - name: Ensure pipx is in PATH
-      run: pipx ensurepath
-      shell: bash
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index d50edce..21cde69 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -15,7 +15,7 @@ jobs:
   test-os-python-matrix:
     runs-on: ${{ matrix.os }}
     strategy:
-      max-parallel: 10
+      max-parallel: 4
       # do not abort the whole test job if one combination in the matrix fails
       fail-fast: false
       matrix: