diff --git a/.github/workflows/flake8-mypy.yml b/.github/workflows/flake8-mypy.yml
index 50dafb2..d363a4c 100644
--- a/.github/workflows/flake8-mypy.yml
+++ b/.github/workflows/flake8-mypy.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade poetry
-          poetry install
+          poetry install -E fastapi
       - name: Lint with flake8
         run: |
           poetry run flake8 pydantic_async_validation tests
diff --git a/.github/workflows/tox-pytest.yml b/.github/workflows/tox-pytest.yml
index a4a9658..6a7acbb 100644
--- a/.github/workflows/tox-pytest.yml
+++ b/.github/workflows/tox-pytest.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade poetry
-          poetry install
+          poetry install -E fastapi
       - name: Test with pytest
         run: |
           poetry run tox -e 'py'