diff --git a/.circleci/config.yml b/.circleci/config.yml
index 2f5016839..bb5a7edff 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -18,26 +18,29 @@ jobs:
           name: Install system deps
           command: sudo apt-get install -y wkhtmltopdf xvfb
       - run:
-          name: Install Python deps in a venv
+          name: Install Python deps
           command: |
             sudo pip install pipenv==2018.7.1
             cd repondeur
-            pipenv install --dev
+            pipenv lock -r >requirements.txt
+            sudo pip install -r requirements.txt
+            pipenv lock -r --dev >requirements-dev.txt
+            sudo pip install -r requirements-dev.txt
       - run:
           name: Check formatting with black
           command: |
             cd repondeur
-            pipenv run black --check .
+            black --check .
       - run:
           name: Check coding style with flake8
           command: |
             cd repondeur
-            pipenv run flake8
+            flake8
       - run:
           name: Check type annotations with mypy
           command: |
             cd repondeur
-            pipenv run mypy zam_repondeur
+            mypy zam_repondeur
       - run:
           name: Run tests
           command: |
@@ -45,6 +48,6 @@ jobs:
             sudo sed --in-place '/fr_FR.UTF-8/s/^#//' /etc/locale.gen
             sudo locale-gen fr_FR.UTF-8
             mkdir -p test-reports
-            pipenv run pytest -vv --junitxml=test-reports/junit.xml
+            pytest -vv --junitxml=test-reports/junit.xml tests/
       - store_test_results:
           path: repondeur/test-reports
diff --git a/repondeur/pyproject.toml b/repondeur/pyproject.toml
new file mode 100644
index 000000000..1e7069bb2
--- /dev/null
+++ b/repondeur/pyproject.toml
@@ -0,0 +1,11 @@
+[tool.black]
+exclude = '''
+/(
+    \.mypy_cache
+  | \.pytest_cache
+  | \.web_cache
+  | build
+  | dist
+  | src
+)/
+'''
\ No newline at end of file
diff --git a/repondeur/setup.cfg b/repondeur/setup.cfg
index db2dac12e..2b7eca1d1 100644
--- a/repondeur/setup.cfg
+++ b/repondeur/setup.cfg
@@ -4,6 +4,9 @@ exclude =
     .mypy_cache
     .pytest_cache
     .web_cache
+    build
+    dist
+    src
 
 [tool:pytest]
 addopts = --cov --no-cov-on-fail