diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 3a6e9496..147260a1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -5,6 +5,8 @@ on: [push, pull_request]
 jobs:
   tests:
     uses: ./.github/workflows/tests.yaml
+  self_test:
+    uses: ./.github/workflows/self_test.yaml
   lint:
     uses: ./.github/workflows/lint.yaml
   format:
diff --git a/.github/workflows/self_test.yaml b/.github/workflows/self_test.yaml
new file mode 100644
index 00000000..fa46bc8b
--- /dev/null
+++ b/.github/workflows/self_test.yaml
@@ -0,0 +1,32 @@
+name: Self test
+
+on: [workflow_call]
+
+jobs:
+  tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        os: [ubuntu-22.04]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Set up Poetry
+        uses: Gr1N/setup-poetry@v8
+        with:
+          poetry-version: "1.5.1" # support for Python 3.7 was dropped in 1.6.0
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cache/pypoetry/virtualenvs
+          key: ${{ runner.os }}-poetry-self-test-${{ hashFiles('poetry.lock') }}
+      - name: Install project
+        run: poetry install --no-interaction --sync --with=nox,test,lint,format,dev
+      - name: Run fawltydeps on Python ${{ matrix.python-version }}
+        run: poetry run nox --no-venv --no-install --non-interactive -s self_test -- -vv
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index ae21be72..d33b92ba 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -33,5 +33,3 @@ jobs:
         run: poetry run nox --no-venv --no-install --non-interactive -s tests -- -vv
       - name: Run integration tests on Python ${{ matrix.python-version }}
         run: poetry run nox --no-venv --no-install --non-interactive -s integration_tests -- -vv
-      - name: Run fawltydeps on Python ${{ matrix.python-version }}
-        run: poetry run nox --no-venv --no-install --non-interactive -s self_test -- -vv