diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index c5015d5f..7eab4793 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -70,3 +70,45 @@ jobs:
     - name: Test with behave
       if: success() || failure()
       run: poetry run behave --no-skipped --format progress2 --junit --junit-directory reports/behave
+
+  test-namespace-plugins:
+    if: >
+      ! contains(github.event.head_commit.message, '[ci skip]')
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: [ 3.7, 3.8, 3.9 ]
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
+        exclude: # Added for GitHub Actions PR problem 2020-12-19 -- remove later!
+          - os: windows-latest
+            python-version: 3.9
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: poetry cache
+      uses: actions/cache@v2
+      with:
+        path: .venv
+        key: ${{ runner.os }}-${{ hashFiles('poetry.lock') }}-${{ matrix.python-version }}-v2-namespace-plugins
+
+    - name: Install dependencies
+      run: |
+        pip install poetry
+        poetry config --local virtualenvs.in-project true
+        poetry add git+https://github.com/MinchinWeb/jrnl-rot13-exporter.git
+        poetry install --remove-untracked
+        poetry install 
+
+    - name: Test with pytest
+      if: success() || failure()
+      run: poetry run pytest --junitxml=reports/pytest/results.xml
+
+    - name: Test with behave
+      if: success() || failure()
+      run: poetry run behave --no-skipped --format progress2 --junit --junit-directory reports/behave