diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index ab0314e..2c1b849 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -24,11 +24,11 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install pytest fakeredis
+          pip install poetry
+          poetry install --all-groups --no-interaction --no-root -v
 
       - name: Redis Server in GitHub Actions
         uses: supercharge/redis-github-action@1.8.0
 
       - name: Run tests
-        run: pytest -s -v --tb=short tests/
+        run: poetry run pytest -s -v --tb=short tests/
diff --git a/.gitignore b/.gitignore
index 7e07261..b6d108f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,19 +1,17 @@
-*.pyc
-prompt.md
-Pipfile
-Pipfile.lock
-*.code-workspace
-conf/
 *.bak
-other/
-TransitApp/
-.vscode/
-.DS_Store
-.dockerignore
-Dockerfile
-fly.toml
-.pytest_cache/
+*.code-workspace
 *.instructions.md
+*.pyc
+
 CLAUDE.md
 poetry.lock
-pyproject.toml
+.dockerignore
+.DS_Store
+
+.pytest_cache/
+.vscode/
+.claude/
+.fly/
+conf/
+other/
+TransitApp/
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..abfc015
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,32 @@
+[project]
+name = "transit-sh"
+version = "0.1.0"
+description = "File transfer service without intermediate storage"
+authors = [{name = "Rémi Héneault",email = "remi@heneault.fr"}]
+
+requires-python = ">=3.13"
+dependencies = [
+    "uvloop (>=0.21.0, <1.0.0)",
+    "uvicorn (>=0.35.0, <1.0.0)",
+    "websockets (>=15.0.1, <16.0.0)",
+    "httptools (>=0.6.4, <0.7.0)",
+    "fastapi (>=0.116.1, <1.0.0)",
+    "pydantic (>=2.11.7, <3.0.0)",
+    "redis (>=6.3.0, <7.0.0)",
+    "anyio (>=4.10.0, <5.0.0)",
+    "jinja2 (>=3.1.6, <4.0.0)",
+    "sentry-sdk (>=2.34.1, <3.0.0)"
+]
+
+[build-system]
+requires = ["poetry-core>=2.0.0,<3.0.0"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.poetry]
+package-mode = false
+
+[tool.poetry.group.dev.dependencies]
+pytest = "*"
+httpx = "*"
+rich = "*"
+
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index e8d90f0..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,12 +0,0 @@
--i https://pypi.org/simple
-uvloop>=0.21.0
-uvicorn>=0.35.0
-httptools>=0.6.4
-websockets>=15.0.1
-fastapi>=0.116.1
-redis>=6.2.0
-jinja2>=3.1.6
-httpx>=0.28.1
-rich>=14.0.0
-sentry-sdk[fastapi]>=2.32.0
-pydantic>=2.0.0