diff --git a/.drone.jsonnet b/.drone.jsonnet
index 9e1df48..3deff4c 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -6,8 +6,9 @@ local Pipeline(py_version) = {
       name: "test",
       image: "python:" + py_version,
       commands: [
-        "pip install .[tests]",
-        "pytest"
+        "pip install poetry",
+        "poetry install -v",
+        "poetry run pytest"
       ]
     }
   ]
diff --git a/.gitignore b/.gitignore
index cd4dcb4..cc8e0e3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,6 @@ coverage.xml
 
 # Virtualenv
 venv/
+
+# Poetry
+poetry.lock
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..1ca3591
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,30 @@
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"
+
+[tool]
+[tool.poetry]
+name = "apns2"
+version = "0.7.1"
+description = "A python library for interacting with the Apple Push Notification Service via HTTP/2 protocol"
+license = "MIT"
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3.5",
+    "Programming Language :: Python :: 3.6",
+    "Programming Language :: Python :: 3.7",
+    "Programming Language :: Python :: 3.8",
+    "Topic :: Software Development :: Libraries"
+]
+authors = ["Sergey Petrov <me@pr0ger.prg>"]
+
+[tool.poetry.dependencies]
+python = ">=3.5"
+cryptography = ">=1.7.2"
+hyper = ">=0.7"
+pyjwt = ">=1.4.0"
+
+[tool.poetry.dev-dependencies]
+pytest = "*"
+freezegun = "*"
diff --git a/tox.ini b/tox.ini
index 7526f03..4d0547e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,8 +2,7 @@
 envlist = py35, py36, py37, py38
 
 [testenv]
-commands = pytest {posargs}
-
-extras = tests
-
-usedevelop=True
+whitelist_externals = poetry
+commands =
+    poetry install -v
+    poetry run pytest {posargs}