diff --git a/.circleci/config.yml b/.circleci/config.yml
index 6f2f11a..47e2901 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,6 +1,6 @@
 version: 2
 jobs:
-  build:
+  build_test:
     docker:
       - image: circleci/python:3.6.9
     steps:
@@ -12,7 +12,7 @@ jobs:
 
       - run:
           name: install dependencies
-          command: poetry install -v -E flask
+          command: poetry install -v -E pytest
 
       - save_cache:
           key: deps-{{ checksum "poetry.lock" }}
@@ -26,11 +26,58 @@ jobs:
       - run:
           name: run tests
           command: |
-            poetry run coverage run -m pytest .
+            poetry run coverage run -m pytest -vv
             poetry run coveralls
 
+  tox:
+    docker:
+      - image: circleci/python:3.6.9
+    steps:
+      - checkout
+
+      - restore_cache:
+          keys:
+            - pyenv-{{ checksum ".python-version" }}
+
+      - run:
+          name: install pyenv
+          command: |
+            git clone https://github.com/pyenv/pyenv.git ~/.pyenv || (cd ~/.pyenv && git pull)
+            # ~/.local/bin is already in the path and the bash_profile doesn't get sourced between steps
+            mkdir -p ~/.local/bin
+            ln -s ~/.pyenv/bin/pyenv ~/.local/bin/
+
+      - restore_cache:
+          keys:
+            - deps-{{ checksum "poetry.lock" }}
+
+      - run:
+          name: make sure tox is installed
+          command: poetry install -v
+
+      - save_cache:
+          key: deps-{{ checksum "poetry.lock" }}
+          paths:
+            - /home/circleci/.cache/pypoetry/virtualenvs
+
+      - run:
+          name: install all Python versions
+          command: |
+            pyenv versions
+            cat .python-version | xargs -x -l1 pyenv install --skip-existing
+
+      - save_cache:
+          key: pyenv-{{ checksum ".python-version" }}
+          paths:
+            - /home/circleci/.pyenv
+
+      - run:
+          name: test across multiple Python / libraries versions
+          command: poetry run tox -vv
+
 workflows:
   version: 2
   build:
     jobs:
-      - build
+      - build_test
+      - tox
diff --git a/.python-version b/.python-version
index adda3ad..4231944 100644
--- a/.python-version
+++ b/.python-version
@@ -1,3 +1,3 @@
-3.6.9
-3.7.4
-3.8-dev
+3.8.3
+3.6.10
+3.7.7
diff --git a/README.md b/README.md
index 9055c22..46a7ebb 100644
--- a/README.md
+++ b/README.md
@@ -38,12 +38,14 @@ poetry publish
 # Lint the code
 poetry run flake8 howfast_apm
 
-# Running the tests
+# Run the tests
 poetry run pytest
 
-# Running the tests across a matrix of Python versions and Flask versions
-pip install tox tox-pyenv
-tox
+# Run the tests across a matrix of Python versions and Flask versions
+# make sure all the relevant Python versions are available locally
+cat .python-version | xargs -x -l1 pyenv install --skip-existing
+# run the tests on the selected versions
+poetry run tox
 ```
 
 ## Publish
diff --git a/howfast_apm/__init__.py b/howfast_apm/__init__.py
index e880a6a..2fcd7f1 100644
--- a/howfast_apm/__init__.py
+++ b/howfast_apm/__init__.py
@@ -1 +1,19 @@
-from .flask import HowFastFlaskMiddleware
+# TODO: refactor module autodetection
+
+try:
+    import flask
+except ImportError:
+    # Flask not available
+    def HowFastFlaskMiddleware(*args, **kwargs):
+        raise Exception("Flask is not installed, cannot use HowFastFlaskMiddleware.")
+else:
+    from .flask import HowFastFlaskMiddleware
+
+try:
+    import quart
+except ImportError:
+    # Quart not available
+    def HowFastQuartMiddleware(*args, **kwargs):
+        raise Exception("Quart is not installed, cannot use HowFastQuartMiddleware.")
+else:
+    from .quart import HowFastQuartMiddleware
diff --git a/howfast_apm/flask.py b/howfast_apm/flask.py
index 6f9caac..3f25ef3 100644
--- a/howfast_apm/flask.py
+++ b/howfast_apm/flask.py
@@ -15,9 +15,6 @@
 class HowFastFlaskMiddleware(CoreAPM):
     """
     Flask middleware to measure how much time is spent per endpoint.
-
-    This implementation is purposedly naive and potentially slow, but its goal is to validate the
-    PoC. It should be replaced/improved in the future, based on the results of the PoC.
     """
 
     def __init__(
diff --git a/howfast_apm/quart.py b/howfast_apm/quart.py
new file mode 100644
index 0000000..d470148
--- /dev/null
+++ b/howfast_apm/quart.py
@@ -0,0 +1,137 @@
+import logging
+from typing import List
+from datetime import datetime, timezone
+from timeit import default_timer as timer
+from quart import Quart, request, exceptions
+from quart.signals import request_started
+from werkzeug import local
+
+from .core import CoreAPM
+from .utils import is_in_blacklist, compile_endpoints
+
+logger = logging.getLogger('howfast_apm')
+
+
+class HowFastQuartMiddleware(CoreAPM):
+    """
+    Quart middleware to measure how much time is spent per endpoint.
+    """
+
+    def __init__(
+            self,
+            # The Flask application to analyze
+            app: Quart,
+            # The HowFast app ID to use
+            app_id: str = None,
+            # Endpoints not to monitor
+            endpoints_blacklist: List[str] = None,
+            # Other configuration parameters passed to the CoreAPM constructor
+            **kwargs,
+    ):
+
+        super().__init__(**kwargs)
+
+        self.app = app
+        self.asgi_app = app.asgi_app
+
+        # We need to store thread local information, let's use Werkzeug's context locals
+        # (see https://werkzeug.palletsprojects.com/en/1.0.x/local/)
+        self.local = local.Local()
+        self.local_manager = local.LocalManager([self.local])
+
+        # Overwrite the passed ASGI application
+        app.asgi_app = self
+
+        if endpoints_blacklist:
+            self.endpoints_blacklist = compile_endpoints(*endpoints_blacklist)
+        else:
+            self.endpoints_blacklist = []
+
+        # Setup the queue and the background thread
+        self.setup(app_id)
+
+        request_started.connect(
+            self._request_started,
+            # I'm not completely sure why, but it looks like the receiver function is somehow
+            # recognized as out of scope, which resets the reference. If the receiver is defined at
+            # the module level (outside of the class) then it works. To avoid the reference being
+            # reset, we have to explicitly ask it not be reset.
+            weak=False,
+        )
+
+    async def __call__(self, scope, receive, send):
+        if not self.app_id:
+            # HF APM not configured, return early to save some time
+            # TODO: wouldn't it be better to just not replace the ASGI app?
+            return await self.asgi_app(scope, receive, send)
+
+        if scope.get('type') != "http":
+            # Other protocols
+            # - "lifespan" is not relevant (startup/shutdown of ASGI, see
+            #   https://asgi.readthedocs.io/en/latest/specs/lifespan.html)
+            # - "websocket" is not supported (see
+            #   https://asgi.readthedocs.io/en/latest/specs/www.html#websocket)
+            return await self.asgi_app(scope, receive, send)
+
+        # https://asgi.readthedocs.io/en/latest/specs/www.html#connection-scope
+
+        uri = scope.get('path')
+
+        if is_in_blacklist(uri, self.endpoints_blacklist):
+            # Endpoint blacklist, return now
+            return await self.asgi_app(scope, receive, send)
+
+        instance = {'response_status': None}
+
+        def _send_wrapped(response):
+            if response['type'] == 'http.response.start':
+                instance['response_status'] = response['status']
+            return send(response)
+
+        method = scope.get('method')
+
+        time_request_started = datetime.now(timezone.utc)
+        try:
+            # Time the function execution
+            start = timer()
+            response = await self.asgi_app(scope, receive, _send_wrapped)
+            # Stop the timer as soon as possible to get the best measure of the function's execution time
+            end = timer()
+        except BaseException:
+            instance['response_status'] = 500
+            raise
+        finally:
+            elapsed = end - start
+            self.save_point(
+                time_request_started=time_request_started,
+                time_elapsed=elapsed,
+                method=method,
+                uri=uri,
+                response_status=str(instance['response_status']),
+                # Request metadata
+                endpoint_name=getattr(self.local, 'endpoint_name', None),
+                url_rule=getattr(self.local, 'url_rule', None),
+                is_not_found=getattr(self.local, 'is_not_found', None),
+            )
+            # Werkzeug locals are designed for use in WSGI, so for ASGI we cannot use the helpful
+            # local_manager.make_middleware() to clean the locals after each request - we do it
+            # manually here instead
+            self.local_manager.cleanup()
+
+        return response
+
+    async def _request_started(self, sender, **kwargs):
+        async with sender.app_context():
+            self._save_request_metadata()
+
+    def _save_request_metadata(self):
+        """ Extract and save request metadata in the context local """
+        # This will yield strings like:
+        # * "monitor" (when the endpoint is defined using a resource)
+        # * "apm-collection.store_points" (when the endpoint is defined with a blueprint)
+        # The endpoint name will always be lowercase
+        self.local.endpoint_name = request.endpoint
+        # This will yield strings like "/v1.1/apm/<int:apm_id>/endpoint"
+        self.local.url_rule = request.url_rule.rule if request.url_rule is not None else None
+        # We want to tell the difference between a "real" 404 and a 404 returned by an existing view
+        self.local.is_not_found = isinstance(request.routing_exception, exceptions.NotFound)
diff --git a/poetry.lock b/poetry.lock
index 00eeb5f..eb0b489 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,3 +1,20 @@
+[[package]]
+category = "main"
+description = "File support for asyncio."
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "aiofiles"
+optional = true
+python-versions = "*"
+version = "0.5.0"
+
+[[package]]
+category = "dev"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+name = "appdirs"
+optional = false
+python-versions = "*"
+version = "1.4.4"
+
 [[package]]
 category = "dev"
 description = "Disable App Nap on OS X 10.9"
@@ -14,7 +31,7 @@ marker = "sys_platform == \"win32\""
 name = "atomicwrites"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.3.0"
+version = "1.4.0"
 
 [[package]]
 category = "dev"
@@ -69,7 +86,7 @@ description = "Composable command line interface toolkit"
 name = "click"
 optional = true
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "7.1.1"
+version = "7.1.2"
 
 [[package]]
 category = "dev"
@@ -112,6 +129,14 @@ optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
 version = "4.4.2"
 
+[[package]]
+category = "dev"
+description = "Distribution utilities"
+name = "distlib"
+optional = false
+python-versions = "*"
+version = "0.3.0"
+
 [[package]]
 category = "dev"
 description = "Pythonic argument parser, that will make you smile"
@@ -122,25 +147,28 @@ version = "0.6.2"
 
 [[package]]
 category = "dev"
-description = "Discover and load entry points from installed packages."
-name = "entrypoints"
+description = "A platform independent file lock."
+name = "filelock"
 optional = false
-python-versions = ">=2.7"
-version = "0.3"
+python-versions = "*"
+version = "3.0.12"
 
 [[package]]
 category = "dev"
-description = "the modular source code checker: pep8, pyflakes and co"
+description = "the modular source code checker: pep8 pyflakes and co"
 name = "flake8"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "3.7.9"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "3.8.2"
 
 [package.dependencies]
-entrypoints = ">=0.3.0,<0.4.0"
 mccabe = ">=0.6.0,<0.7.0"
-pycodestyle = ">=2.5.0,<2.6.0"
-pyflakes = ">=2.1.0,<2.2.0"
+pycodestyle = ">=2.6.0a1,<2.7.0"
+pyflakes = ">=2.2.0,<2.3.0"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
 
 [[package]]
 category = "main"
@@ -161,6 +189,69 @@ dev = ["pytest", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinxco
 docs = ["sphinx", "pallets-sphinx-themes", "sphinxcontrib-log-cabinet", "sphinx-issues"]
 dotenv = ["python-dotenv"]
 
+[[package]]
+category = "main"
+description = "A pure-Python, bring-your-own-I/O implementation of HTTP/1.1"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "h11"
+optional = true
+python-versions = "*"
+version = "0.9.0"
+
+[[package]]
+category = "main"
+description = "HTTP/2 State-Machine based protocol implementation"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "h2"
+optional = true
+python-versions = "*"
+version = "3.2.0"
+
+[package.dependencies]
+hpack = ">=3.0,<4"
+hyperframe = ">=5.2.0,<6"
+
+[[package]]
+category = "main"
+description = "Pure-Python HPACK header compression"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "hpack"
+optional = true
+python-versions = "*"
+version = "3.0.0"
+
+[[package]]
+category = "main"
+description = "A ASGI Server based on Hyper libraries and inspired by Gunicorn."
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "hypercorn"
+optional = true
+python-versions = ">=3.7"
+version = "0.9.5"
+
+[package.dependencies]
+h11 = "*"
+h2 = ">=3.1.0"
+priority = "*"
+toml = "*"
+typing-extensions = "*"
+wsproto = ">=0.14.0"
+
+[package.extras]
+h3 = ["aioquic (>=0.8.1,<1.0)"]
+tests = ["asynctest", "hypothesis", "pytest", "pytest-asyncio", "pytest-cov", "pytest-trio", "trio"]
+trio = ["trio (>=0.11.0)"]
+uvloop = ["uvloop"]
+
+[[package]]
+category = "main"
+description = "HTTP/2 framing layer for Python"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "hyperframe"
+optional = true
+python-versions = "*"
+version = "5.2.0"
+
 [[package]]
 category = "main"
 description = "Internationalized Domain Names in Applications (IDNA)"
@@ -185,6 +276,27 @@ zipp = ">=0.5"
 docs = ["sphinx", "rst.linker"]
 testing = ["packaging", "importlib-resources"]
 
+[[package]]
+category = "dev"
+description = "Read resources from Python packages"
+marker = "python_version < \"3.7\""
+name = "importlib-resources"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "1.5.0"
+
+[package.dependencies]
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[package.dependencies.zipp]
+python = "<3.8"
+version = ">=0.4"
+
+[package.extras]
+docs = ["sphinx", "rst.linker", "jaraco.packaging"]
+
 [[package]]
 category = "dev"
 description = "IPython-enabled pdb"
@@ -207,7 +319,7 @@ marker = "python_version >= \"3.4\""
 name = "ipython"
 optional = false
 python-versions = ">=3.6"
-version = "7.13.0"
+version = "7.14.0"
 
 [package.dependencies]
 appnope = "*"
@@ -223,7 +335,7 @@ setuptools = ">=18.5"
 traitlets = ">=4.2"
 
 [package.extras]
-all = ["numpy (>=1.14)", "testpath", "notebook", "nose (>=0.10.1)", "nbconvert", "requests", "ipywidgets", "qtconsole", "ipyparallel", "Sphinx (>=1.3)", "pygments", "nbformat", "ipykernel"]
+all = ["nose (>=0.10.1)", "Sphinx (>=1.3)", "testpath", "nbformat", "ipywidgets", "qtconsole", "numpy (>=1.14)", "notebook", "ipyparallel", "ipykernel", "pygments", "requests", "nbconvert"]
 doc = ["Sphinx (>=1.3)"]
 kernel = ["ipykernel"]
 nbconvert = ["nbconvert"]
@@ -302,7 +414,7 @@ description = "More routines for operating on iterables, beyond itertools"
 name = "more-itertools"
 optional = false
 python-versions = ">=3.5"
-version = "8.2.0"
+version = "8.3.0"
 
 [[package]]
 category = "dev"
@@ -334,7 +446,7 @@ description = "Core utilities for Python packages"
 name = "packaging"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "20.3"
+version = "20.4"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
@@ -397,6 +509,15 @@ version = ">=0.12"
 [package.extras]
 dev = ["pre-commit", "tox"]
 
+[[package]]
+category = "main"
+description = "A pure-Python implementation of the HTTP/2 priority tree"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "priority"
+optional = true
+python-versions = "*"
+version = "1.3.0"
+
 [[package]]
 category = "dev"
 description = "Library for building powerful interactive command lines in Python"
@@ -432,7 +553,7 @@ description = "Python style guide checker"
 name = "pycodestyle"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.5.0"
+version = "2.6.0"
 
 [[package]]
 category = "dev"
@@ -440,7 +561,7 @@ description = "passive checker of Python programs"
 name = "pyflakes"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.1.1"
+version = "2.2.0"
 
 [[package]]
 category = "dev"
@@ -465,7 +586,7 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=3.5"
-version = "5.4.1"
+version = "5.4.2"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
@@ -485,6 +606,20 @@ version = ">=0.12"
 checkqa-mypy = ["mypy (v0.761)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
+[[package]]
+category = "dev"
+description = "Pytest support for asyncio."
+name = "pytest-asyncio"
+optional = false
+python-versions = ">= 3.5"
+version = "0.12.0"
+
+[package.dependencies]
+pytest = ">=5.4.0"
+
+[package.extras]
+testing = ["async_generator (>=1.3)", "coverage", "hypothesis (>=5.7.1)"]
+
 [[package]]
 category = "dev"
 description = "Local continuous test runner with pytest and watchdog."
@@ -499,6 +634,28 @@ docopt = ">=0.4.0"
 pytest = ">=2.6.4"
 watchdog = ">=0.6.0"
 
+[[package]]
+category = "main"
+description = "A Python ASGI web microframework with the same API as Flask"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "quart"
+optional = true
+python-versions = ">=3.7.0"
+version = "0.12.0"
+
+[package.dependencies]
+aiofiles = "*"
+blinker = "*"
+click = "*"
+hypercorn = ">=0.7.0"
+itsdangerous = "*"
+jinja2 = "*"
+toml = "*"
+werkzeug = ">=1.0.0"
+
+[package.extras]
+dotenv = ["python-dotenv"]
+
 [[package]]
 category = "main"
 description = "Python HTTP for Humans."
@@ -523,7 +680,52 @@ description = "Python 2 and 3 compatibility utilities"
 name = "six"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "1.14.0"
+version = "1.15.0"
+
+[[package]]
+category = "main"
+description = "Python Library for Tom's Obvious, Minimal Language"
+name = "toml"
+optional = false
+python-versions = "*"
+version = "0.10.1"
+
+[[package]]
+category = "dev"
+description = "tox is a generic virtualenv management and test command line tool"
+name = "tox"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+version = "3.15.1"
+
+[package.dependencies]
+colorama = ">=0.4.1"
+filelock = ">=3.0.0"
+packaging = ">=14"
+pluggy = ">=0.12.0"
+py = ">=1.4.17"
+six = ">=1.14.0"
+toml = ">=0.9.4"
+virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,<20.0.3 || >20.0.3,<20.0.4 || >20.0.4,<20.0.5 || >20.0.5,<20.0.6 || >20.0.6,<20.0.7 || >20.0.7"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12,<2"
+
+[package.extras]
+docs = ["sphinx (>=2.0.0)", "towncrier (>=18.5.0)", "pygments-github-lexers (>=0.0.5)", "sphinxcontrib-autoprogram (>=0.1.5)"]
+testing = ["freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-xdist (>=1.22.2)", "pytest-randomly (>=1.0.0)", "flaky (>=3.4.0)", "psutil (>=5.6.1)"]
+
+[[package]]
+category = "dev"
+description = "tox plugin that makes tox use `pyenv which` to find python executables"
+name = "tox-pyenv"
+optional = false
+python-versions = "*"
+version = "1.1.0"
+
+[package.dependencies]
+tox = ">=2.0"
 
 [[package]]
 category = "dev"
@@ -551,7 +753,7 @@ python-versions = "*"
 version = "1.4.1"
 
 [[package]]
-category = "dev"
+category = "main"
 description = "Backported and Experimental Type Hints for Python 3.5+"
 name = "typing-extensions"
 optional = false
@@ -571,6 +773,32 @@ brotli = ["brotlipy (>=0.6.0)"]
 secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)", "ipaddress"]
 socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
 
+[[package]]
+category = "dev"
+description = "Virtual Python Environment builder"
+name = "virtualenv"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "20.0.21"
+
+[package.dependencies]
+appdirs = ">=1.4.3,<2"
+distlib = ">=0.3.0,<1"
+filelock = ">=3.0.0,<4"
+six = ">=1.9.0,<2"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = ">=0.12,<2"
+
+[package.dependencies.importlib-resources]
+python = "<3.7"
+version = ">=1.0,<2"
+
+[package.extras]
+docs = ["sphinx (>=3)", "sphinx-argparse (>=0.2.5)", "sphinx-rtd-theme (>=0.4.3)", "towncrier (>=19.9.0rc1)", "proselint (>=0.10.2)"]
+testing = ["pytest (>=4)", "coverage (>=5)", "coverage-enable-subprocess (>=1)", "pytest-xdist (>=1.31.0)", "pytest-mock (>=2)", "pytest-env (>=0.6.2)", "pytest-randomly (>=1)", "pytest-timeout", "packaging (>=20.0)", "xonsh (>=0.9.16)"]
+
 [[package]]
 category = "dev"
 description = "Filesystem events monitoring"
@@ -605,6 +833,18 @@ version = "1.0.1"
 dev = ["pytest", "pytest-timeout", "coverage", "tox", "sphinx", "pallets-sphinx-themes", "sphinx-issues"]
 watchdog = ["watchdog"]
 
+[[package]]
+category = "main"
+description = "WebSockets state-machine based protocol implementation"
+marker = "python_version >= \"3.7\" and python_version < \"3.9\""
+name = "wsproto"
+optional = true
+python-versions = ">=3.6.1"
+version = "0.15.0"
+
+[package.dependencies]
+h11 = ">=0.8.1"
+
 [[package]]
 category = "dev"
 description = "A formatter for Python code."
@@ -628,19 +868,29 @@ testing = ["jaraco.itertools", "func-timeout"]
 
 [extras]
 flask = ["flask", "blinker", "werkzeug"]
+pytest = ["flask", "quart"]
+quart = ["quart"]
 
 [metadata]
-content-hash = "7ffdee2c10f72401b85b2586efa52355af506f57b025ec1b5ca79a72a60de0b0"
+content-hash = "f0cba87045cab3d2e6c10c896c8b7823924ce13bb63a1ad0a803f748211abffc"
 python-versions = ">=3.6,<3.9"
 
 [metadata.files]
+aiofiles = [
+    {file = "aiofiles-0.5.0-py3-none-any.whl", hash = "sha256:377fdf7815cc611870c59cbd07b68b180841d2a2b79812d8c218be02448c2acb"},
+    {file = "aiofiles-0.5.0.tar.gz", hash = "sha256:98e6bcfd1b50f97db4980e182ddd509b7cc35909e903a8fe50d8849e02d815af"},
+]
+appdirs = [
+    {file = "appdirs-1.4.4-py2.py3-none-any.whl", hash = "sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128"},
+    {file = "appdirs-1.4.4.tar.gz", hash = "sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41"},
+]
 appnope = [
     {file = "appnope-0.1.0-py2.py3-none-any.whl", hash = "sha256:5b26757dc6f79a3b7dc9fab95359328d5747fcb2409d331ea66d0272b90ab2a0"},
     {file = "appnope-0.1.0.tar.gz", hash = "sha256:8b995ffe925347a2138d7ac0fe77155e4311a0ea6d6da4f5128fe4b3cbe5ed71"},
 ]
 atomicwrites = [
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-    {file = "atomicwrites-1.3.0.tar.gz", hash = "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"},
+    {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
+    {file = "atomicwrites-1.4.0.tar.gz", hash = "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"},
 ]
 attrs = [
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@@ -662,8 +912,8 @@ chardet = [
     {file = "chardet-3.0.4.tar.gz", hash = "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae"},
 ]
 click = [
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-    {file = "click-7.1.1.tar.gz", hash = "sha256:8a18b4ea89d8820c5d0c7da8a64b2c324b4dabb695804dbfea19b9be9d88c0cc"},
+    {file = "click-7.1.2-py2.py3-none-any.whl", hash = "sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc"},
+    {file = "click-7.1.2.tar.gz", hash = "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a"},
 ]
 colorama = [
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@@ -711,21 +961,44 @@ decorator = [
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 ]
+distlib = [
+    {file = "distlib-0.3.0.zip", hash = "sha256:2e166e231a26b36d6dfe35a48c4464346620f8645ed0ace01ee31822b288de21"},
+]
 docopt = [
     {file = "docopt-0.6.2.tar.gz", hash = "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"},
 ]
-entrypoints = [
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-    {file = "entrypoints-0.3.tar.gz", hash = "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"},
+filelock = [
+    {file = "filelock-3.0.12-py3-none-any.whl", hash = "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"},
+    {file = "filelock-3.0.12.tar.gz", hash = "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59"},
 ]
 flake8 = [
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-    {file = "flake8-3.7.9.tar.gz", hash = "sha256:45681a117ecc81e870cbf1262835ae4af5e7a8b08e40b944a8a6e6b895914cfb"},
+    {file = "flake8-3.8.2-py2.py3-none-any.whl", hash = "sha256:ccaa799ef9893cebe69fdfefed76865aeaefbb94cb8545617b2298786a4de9a5"},
+    {file = "flake8-3.8.2.tar.gz", hash = "sha256:c69ac1668e434d37a2d2880b3ca9aafd54b3a10a3ac1ab101d22f29e29cf8634"},
 ]
 flask = [
     {file = "Flask-1.1.2-py2.py3-none-any.whl", hash = "sha256:8a4fdd8936eba2512e9c85df320a37e694c93945b33ef33c89946a340a238557"},
     {file = "Flask-1.1.2.tar.gz", hash = "sha256:4efa1ae2d7c9865af48986de8aeb8504bf32c7f3d6fdc9353d34b21f4b127060"},
 ]
+h11 = [
+    {file = "h11-0.9.0-py2.py3-none-any.whl", hash = "sha256:4bc6d6a1238b7615b266ada57e0618568066f57dd6fa967d1290ec9309b2f2f1"},
+    {file = "h11-0.9.0.tar.gz", hash = "sha256:33d4bca7be0fa039f4e84d50ab00531047e53d6ee8ffbc83501ea602c169cae1"},
+]
+h2 = [
+    {file = "h2-3.2.0-py2.py3-none-any.whl", hash = "sha256:61e0f6601fa709f35cdb730863b4e5ec7ad449792add80d1410d4174ed139af5"},
+    {file = "h2-3.2.0.tar.gz", hash = "sha256:875f41ebd6f2c44781259005b157faed1a5031df3ae5aa7bcb4628a6c0782f14"},
+]
+hpack = [
+    {file = "hpack-3.0.0-py2.py3-none-any.whl", hash = "sha256:0edd79eda27a53ba5be2dfabf3b15780928a0dff6eb0c60a3d6767720e970c89"},
+    {file = "hpack-3.0.0.tar.gz", hash = "sha256:8eec9c1f4bfae3408a3f30500261f7e6a65912dc138526ea054f9ad98892e9d2"},
+]
+hypercorn = [
+    {file = "Hypercorn-0.9.5-py3-none-any.whl", hash = "sha256:c53eb444d05e40ac1aacecaa6d3a8fabada90bbea8aacf617e75d41ac065c310"},
+    {file = "Hypercorn-0.9.5.tar.gz", hash = "sha256:d94fa535e238ce1cd9c9b5f4cb77cb785d53069a5dc57a017e7c2fc51104ad5e"},
+]
+hyperframe = [
+    {file = "hyperframe-5.2.0-py2.py3-none-any.whl", hash = "sha256:5187962cb16dcc078f23cb5a4b110098d546c3f41ff2d4038a9896893bbd0b40"},
+    {file = "hyperframe-5.2.0.tar.gz", hash = "sha256:a9f5c17f2cc3c719b917c4f33ed1c61bd1f8dfac4b1bd23b7c80b3400971b41f"},
+]
 idna = [
     {file = "idna-2.9-py2.py3-none-any.whl", hash = "sha256:a068a21ceac8a4d63dbfd964670474107f541babbd2250d61922f029858365fa"},
     {file = "idna-2.9.tar.gz", hash = "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb"},
@@ -734,12 +1007,16 @@ importlib-metadata = [
     {file = "importlib_metadata-1.6.0-py2.py3-none-any.whl", hash = "sha256:2a688cbaa90e0cc587f1df48bdc97a6eadccdcd9c35fb3f976a09e3b5016d90f"},
     {file = "importlib_metadata-1.6.0.tar.gz", hash = "sha256:34513a8a0c4962bc66d35b359558fd8a5e10cd472d37aec5f66858addef32c1e"},
 ]
+importlib-resources = [
+    {file = "importlib_resources-1.5.0-py2.py3-none-any.whl", hash = "sha256:85dc0b9b325ff78c8bef2e4ff42616094e16b98ebd5e3b50fe7e2f0bbcdcde49"},
+    {file = "importlib_resources-1.5.0.tar.gz", hash = "sha256:6f87df66833e1942667108628ec48900e02a4ab4ad850e25fbf07cb17cf734ca"},
+]
 ipdb = [
     {file = "ipdb-0.12.3.tar.gz", hash = "sha256:5d9a4a0e3b7027a158fc6f2929934341045b9c3b0b86ed5d7e84e409653f72fd"},
 ]
 ipython = [
-    {file = "ipython-7.13.0-py3-none-any.whl", hash = "sha256:eb8d075de37f678424527b5ef6ea23f7b80240ca031c2dd6de5879d687a65333"},
-    {file = "ipython-7.13.0.tar.gz", hash = "sha256:ca478e52ae1f88da0102360e57e528b92f3ae4316aabac80a2cd7f7ab2efb48a"},
+    {file = "ipython-7.14.0-py3-none-any.whl", hash = "sha256:5b241b84bbf0eb085d43ae9d46adf38a13b45929ca7774a740990c2c242534bb"},
+    {file = "ipython-7.14.0.tar.gz", hash = "sha256:f0126781d0f959da852fb3089e170ed807388e986a8dd4e6ac44855845b0fb1c"},
 ]
 ipython-genutils = [
     {file = "ipython_genutils-0.2.0-py2.py3-none-any.whl", hash = "sha256:72dd37233799e619666c9f639a9da83c34013a73e8bbc79a7a6348d93c61fab8"},
@@ -792,8 +1069,8 @@ mccabe = [
     {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
 ]
 more-itertools = [
-    {file = "more-itertools-8.2.0.tar.gz", hash = "sha256:b1ddb932186d8a6ac451e1d95844b382f55e12686d51ca0c68b6f61f2ab7a507"},
-    {file = "more_itertools-8.2.0-py3-none-any.whl", hash = "sha256:5dd8bcf33e5f9513ffa06d5ad33d78f31e1931ac9a18f33d37e77a180d393a7c"},
+    {file = "more-itertools-8.3.0.tar.gz", hash = "sha256:558bb897a2232f5e4f8e2399089e35aecb746e1f9191b6584a151647e89267be"},
+    {file = "more_itertools-8.3.0-py3-none-any.whl", hash = "sha256:7818f596b1e87be009031c7653d01acc46ed422e6656b394b0f765ce66ed4982"},
 ]
 mypy = [
     {file = "mypy-0.720-cp35-cp35m-macosx_10_6_x86_64.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl", hash = "sha256:437020a39417e85e22ea8edcb709612903a9924209e10b3ec6d8c9f05b79f498"},
@@ -813,8 +1090,8 @@ mypy-extensions = [
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
 packaging = [
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-    {file = "packaging-20.3.tar.gz", hash = "sha256:3c292b474fda1671ec57d46d739d072bfd495a4f51ad01a055121d81e952b7a3"},
+    {file = "packaging-20.4-py2.py3-none-any.whl", hash = "sha256:998416ba6962ae7fbd6596850b80e17859a5753ba17c32284f67bfff33784181"},
+    {file = "packaging-20.4.tar.gz", hash = "sha256:4357f74f47b9c12db93624a82154e9b120fa8293699949152b22065d556079f8"},
 ]
 parso = [
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@@ -835,6 +1112,10 @@ pluggy = [
     {file = "pluggy-0.13.1-py2.py3-none-any.whl", hash = "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"},
     {file = "pluggy-0.13.1.tar.gz", hash = "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0"},
 ]
+priority = [
+    {file = "priority-1.3.0-py2.py3-none-any.whl", hash = "sha256:be4fcb94b5e37cdeb40af5533afe6dd603bd665fe9c8b3052610fc1001d5d1eb"},
+    {file = "priority-1.3.0.tar.gz", hash = "sha256:6bc1961a6d7fcacbfc337769f1a382c8e746566aaa365e78047abe9f66b2ffbe"},
+]
 prompt-toolkit = [
     {file = "prompt_toolkit-3.0.3-py3-none-any.whl", hash = "sha256:c93e53af97f630f12f5f62a3274e79527936ed466f038953dfa379d4941f651a"},
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@@ -848,12 +1129,12 @@ py = [
     {file = "py-1.8.1.tar.gz", hash = "sha256:5e27081401262157467ad6e7f851b7aa402c5852dbcb3dae06768434de5752aa"},
 ]
 pycodestyle = [
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-    {file = "pycodestyle-2.5.0.tar.gz", hash = "sha256:e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c"},
+    {file = "pycodestyle-2.6.0-py2.py3-none-any.whl", hash = "sha256:2295e7b2f6b5bd100585ebcb1f616591b652db8a741695b3d8f5d28bdc934367"},
+    {file = "pycodestyle-2.6.0.tar.gz", hash = "sha256:c58a7d2815e0e8d7972bf1803331fb0152f867bd89adf8a01dfd55085434192e"},
 ]
 pyflakes = [
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+    {file = "pyflakes-2.2.0-py2.py3-none-any.whl", hash = "sha256:0d94e0e05a19e57a99444b6ddcf9a6eb2e5c68d3ca1e98e90707af8152c90a92"},
+    {file = "pyflakes-2.2.0.tar.gz", hash = "sha256:35b2d75ee967ea93b55750aa9edbbf72813e06a66ba54438df2cfac9e3c27fc8"},
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 pygments = [
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@@ -864,19 +1145,38 @@ pyparsing = [
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 ]
 pytest = [
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+    {file = "pytest-5.4.2-py3-none-any.whl", hash = "sha256:95c710d0a72d91c13fae35dce195633c929c3792f54125919847fdcdf7caa0d3"},
+    {file = "pytest-5.4.2.tar.gz", hash = "sha256:eb2b5e935f6a019317e455b6da83dd8650ac9ffd2ee73a7b657a30873d67a698"},
+]
+pytest-asyncio = [
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 ]
 pytest-watch = [
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 ]
+quart = [
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+    {file = "Quart-0.12.0.tar.gz", hash = "sha256:99a65bc90d0e1260c9cc9a7dd0b8523eb6cd9f4ec146e771e98a55ee180ae6c2"},
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 requests = [
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 six = [
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-    {file = "six-1.14.0.tar.gz", hash = "sha256:236bdbdce46e6e6a3d61a337c0f8b763ca1e8717c03b369e87a7ec7ce1319c0a"},
+    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
+    {file = "six-1.15.0.tar.gz", hash = "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259"},
+]
+toml = [
+    {file = "toml-0.10.1-py2.py3-none-any.whl", hash = "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"},
+    {file = "toml-0.10.1.tar.gz", hash = "sha256:926b612be1e5ce0634a2ca03470f95169cf16f939018233a670519cb4ac58b0f"},
+]
+tox = [
+    {file = "tox-3.15.1-py2.py3-none-any.whl", hash = "sha256:322dfdf007d7d53323f767badcb068a5cfa7c44d8aabb698d131b28cf44e62c4"},
+    {file = "tox-3.15.1.tar.gz", hash = "sha256:8c9ad9b48659d291c5bc78bcabaa4d680d627687154b812fa52baedaa94f9f83"},
+]
+tox-pyenv = [
+    {file = "tox-pyenv-1.1.0.tar.gz", hash = "sha256:916c2213577aec0b3b5452c5bfb32fd077f3a3196f50a81ad57d7ef3fc2599e4"},
+    {file = "tox_pyenv-1.1.0-py2.py3-none-any.whl", hash = "sha256:e470c18af115fe52eeff95e7e3cdd0793613eca19709966fc2724b79d55246cb"},
 ]
 traitlets = [
     {file = "traitlets-4.3.3-py2.py3-none-any.whl", hash = "sha256:70b4c6a1d9019d7b4f6846832288f86998aa3b9207c6821f3578a6a6a467fe44"},
@@ -914,6 +1214,10 @@ urllib3 = [
     {file = "urllib3-1.25.9-py2.py3-none-any.whl", hash = "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"},
     {file = "urllib3-1.25.9.tar.gz", hash = "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527"},
 ]
+virtualenv = [
+    {file = "virtualenv-20.0.21-py2.py3-none-any.whl", hash = "sha256:a730548b27366c5e6cbdf6f97406d861cccece2e22275e8e1a757aeff5e00c70"},
+    {file = "virtualenv-20.0.21.tar.gz", hash = "sha256:a116629d4e7f4d03433b8afa27f43deba09d48bc48f5ecefa4f015a178efb6cf"},
+]
 watchdog = [
     {file = "watchdog-0.10.2.tar.gz", hash = "sha256:c560efb643faed5ef28784b2245cf8874f939569717a4a12826a173ac644456b"},
 ]
@@ -925,6 +1229,10 @@ werkzeug = [
     {file = "Werkzeug-1.0.1-py2.py3-none-any.whl", hash = "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43"},
     {file = "Werkzeug-1.0.1.tar.gz", hash = "sha256:6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c"},
 ]
+wsproto = [
+    {file = "wsproto-0.15.0-py2.py3-none-any.whl", hash = "sha256:e3d190a11d9307112ba23bbe60055604949b172143969c8f641318476a9b6f1d"},
+    {file = "wsproto-0.15.0.tar.gz", hash = "sha256:614798c30e5dc2b3f65acc03d2d50842b97621487350ce79a80a711229edfa9d"},
+]
 yapf = [
     {file = "yapf-0.28.0-py2.py3-none-any.whl", hash = "sha256:02ace10a00fa2e36c7ebd1df2ead91dbfbd7989686dc4ccbdc549e95d19f5780"},
     {file = "yapf-0.28.0.tar.gz", hash = "sha256:6f94b6a176a7c114cfa6bad86d40f259bbe0f10cf2fa7f2f4b3596fc5802a41b"},
diff --git a/pyproject.toml b/pyproject.toml
index fd35c92..892a5cd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,24 +26,30 @@ classifiers=[
 ]
 
 [tool.poetry.dependencies]
-python = ">=3.6,<3.9"
+python = "^3.6"
 requests = "^2.22"
 flask = {version = ">=0.8", optional = true}
 werkzeug = {version = ">=0.7", optional = true}
 blinker = {version = ">=1.1", optional = true}
+quart = {version = "^0.12.0", optional = true, extras = ["quart"], python = ">=3.7,<3.9"}
 
 [tool.poetry.dev-dependencies]
 pytest = "^5"
+pytest-asyncio = "^0.12.0"
+pytest-watch = "^4.2"
 coverage = "^4.5"
 flake8 = "^3.7"
 yapf = "^0.28.0"
 mypy = "^0.720.0"
 coveralls = "^1.8"
 ipdb = "^0.12.2"
-pytest-watch = "^4.2"
+tox-pyenv = "^1.1.0"
 
 [tool.poetry.extras]
 flask = ["flask", "blinker", "werkzeug"]
+quart = ["quart"]
+# To run the tests, we need to install the tested frameworks
+pytest = ["pytest", "pytest-asyncio", "flask", "quart"]
 
 [build-system]
 requires = ["poetry>=0.12"]
diff --git a/setup.cfg b/setup.cfg
index 4db51dd..2618193 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -5,7 +5,7 @@
 universal=1
 
 [tool:pytest]
-testpaths = .
+testpaths = tests
 addopts = --doctest-modules
 flake8-ignore =
     migrations/*.py E402
diff --git a/tests/test_middleware_flask.py b/tests/test_middleware_flask.py
index 61bf6e6..447b78c 100644
--- a/tests/test_middleware_flask.py
+++ b/tests/test_middleware_flask.py
@@ -1,7 +1,11 @@
 import pytest
 import requests
 
-from flask import Flask
+try:
+    from flask import Flask
+except ModuleNotFoundError:
+    pytest.skip("Flask is not installed, skipping flask-only tests", allow_module_level=True)
+
 from unittest.mock import MagicMock, patch
 from datetime import datetime, timezone
 
diff --git a/tests/test_middleware_quart.py b/tests/test_middleware_quart.py
new file mode 100644
index 0000000..bae31c5
--- /dev/null
+++ b/tests/test_middleware_quart.py
@@ -0,0 +1,223 @@
+import pytest
+import requests
+
+try:
+    from quart import Quart
+except ModuleNotFoundError:
+    pytest.skip("Quart is not installed, skipping quart-only tests", allow_module_level=True)
+
+from unittest.mock import MagicMock, patch
+from datetime import datetime, timezone
+
+
+@pytest.fixture()
+def app():
+    app = Quart("test")
+
+    @app.route('/')
+    async def index():
+        return 'ok'
+
+    @app.route('/name/<string:name>')
+    async def names(name):
+        return f'ok, {name}'
+
+    @app.route('/external-call')
+    async def external_call():
+        requests.put('https://does-not-exist/')
+        return 'ok'
+
+    @app.route('/exception')
+    async def exception():
+        raise Exception("Unhandled exception, kaboom!")
+
+    @app.route('/error')
+    async def error():
+        raise SystemExit()
+
+    @app.route('/record/<int:id>')
+    async def records(id):
+        if id <= 42:
+            return 'ok'
+        # Return a 404 status code
+        return 'not found', 404
+
+    return app
+
+
+@pytest.fixture()
+def HowFastQuartMiddleware():
+    """ Patch the save_point() method """
+    from howfast_apm import HowFastQuartMiddleware
+    HowFastQuartMiddleware._save_point = MagicMock()
+    # Prevent the background thread to actually start
+    HowFastQuartMiddleware.start_background_thread = MagicMock()
+    return HowFastQuartMiddleware
+
+
+@pytest.mark.asyncio
+async def test_ok_without_dsn(app, HowFastQuartMiddleware):
+    """ The middleware should install on a Flask application even with no DSN """
+    # No DSN passed
+    middleware = HowFastQuartMiddleware(app)
+
+    tester = app.test_client()
+    response = await tester.get('/')
+    assert response.status_code == 200
+    assert await response.get_data() == b"ok"
+    assert middleware._save_point.called is False
+
+
+@pytest.mark.asyncio
+async def test_ok_with_dsn(app, HowFastQuartMiddleware):
+    """ The middleware should install on a Flask application """
+    middleware = HowFastQuartMiddleware(app, app_id='some-dsn')
+
+    tester = app.test_client()
+    response = await tester.get('/')
+    assert response.status_code == 200
+    assert await response.get_data() == b"ok"
+    assert middleware._save_point.called is True
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('time_elapsed') > 0
+    assert point.get('time_request_started') < datetime.now(timezone.utc)
+    assert point.get('method') == "GET"
+    assert point.get('response_status') == "200 OK"
+    assert point.get('uri') == "/"
+
+    response = await tester.post('/does-not-exist')
+    assert response.status_code == 404
+    assert middleware._save_point.call_count == 2
+    point = middleware._save_point.call_args[1]
+    assert point.get('method') == "POST"
+    assert point.get('response_status') == "404 NOT FOUND"
+    assert point.get('uri') == "/does-not-exist"
+
+
+@pytest.mark.asyncio
+async def test_with_exception(app, HowFastQuartMiddleware):
+    """ The middleware should gracefully handle routes that raise an Exception """
+    middleware = HowFastQuartMiddleware(app, app_id='some-dsn')
+
+    tester = app.test_client()
+    response = await tester.get('/exception')
+    assert response.status_code == 500
+    assert middleware._save_point.called is True
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('time_elapsed') > 0
+    assert point.get('time_request_started') < datetime.now(timezone.utc)
+    assert point.get('method') == "GET"
+    assert point.get('response_status') == "500 INTERNAL SERVER ERROR"
+    assert point.get('uri') == "/exception"
+
+
+@pytest.mark.asyncio
+async def test_with_error(app, HowFastQuartMiddleware):
+    """ The middleware should gracefully handle routes that raise an Error """
+    middleware = HowFastQuartMiddleware(app, app_id='some-dsn')
+
+    tester = app.test_client()
+    with pytest.raises(SystemExit):
+        # Flask will propagate the SystemExit instead of catching it
+        await tester.get('/error')
+    # However, the failure should still be logged by the middleware
+    assert middleware._save_point.called is True
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('time_elapsed') > 0
+    assert point.get('time_request_started') < datetime.now(timezone.utc)
+    assert point.get('method') == "GET"
+    assert point.get('response_status') == "500 INTERNAL SERVER ERROR"
+    assert point.get('uri') == "/error"
+
+
+@pytest.mark.asyncio
+async def test_with_path_parameter(app, HowFastQuartMiddleware):
+    """ Endpoints with a path parameter should be deduplicated """
+    middleware = HowFastQuartMiddleware(app, app_id='some-dsn')
+
+    tester = app.test_client()
+    response = await tester.get('/name/donald')
+    assert response.status_code == 200
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('endpoint_name') == "names"
+    assert point.get('url_rule') == "/name/<string:name>"
+
+
+@pytest.mark.asyncio
+async def test_not_found(app, HowFastQuartMiddleware):
+    """ Requests with no matching route should have their is_not_found flag set to true """
+    middleware = HowFastQuartMiddleware(app, app_id='some-dsn')
+
+    tester = app.test_client()
+    response = await tester.get('/record/12')
+    assert response.status_code == 200
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('is_not_found') is False
+    middleware._save_point.reset_mock()
+
+    response = await tester.get('/record/100')
+    assert response.status_code == 404
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('is_not_found') is False
+    middleware._save_point.reset_mock()
+
+    response = await tester.get('/does-not-exist')
+    assert response.status_code == 404
+    assert middleware._save_point.call_count == 1
+    point = middleware._save_point.call_args[1]
+    assert point.get('is_not_found') is True
+
+
+@pytest.mark.asyncio
+async def test_blacklist_option(app, HowFastQuartMiddleware):
+    """ URLs in the blacklist should not be tracked """
+    middleware = HowFastQuartMiddleware(
+        app,
+        app_id='some-dsn',
+        endpoints_blacklist=['/name/toto', '/name/test-*'],
+    )
+
+    tester = app.test_client()
+    response = await tester.get('/name/toto')
+    assert response.status_code == 200
+    assert middleware._save_point.called is False
+
+    # Matching with patterns
+    response = await tester.get('/name/test-34abc')
+    assert response.status_code == 200
+    assert middleware._save_point.called is False
+
+
+@patch('requests.put')
+@pytest.mark.asyncio
+async def test_interactions_option(app, put_mocked, HowFastQuartMiddleware):
+    """ The record_interactions parameter should be accepted """
+    from howfast_apm import HowFastQuartMiddleware
+    middleware = HowFastQuartMiddleware(
+        app,
+        app_id='some-dsn',
+        record_interactions=True,
+    )
+
+    tester = app.test_client()
+    response = await tester.get('/external-call')
+    assert response.status_code == 200
+    assert put_mocked.called is True
+    assert middleware._save_point.called is True
+
+    # This assumes that _save_point is static and is not responsible for emptying the list of
+    # interactions...
+    assert len(middleware.interactions) == 0, \
+        "after the point is saved, the interaction list should be empty for the next point"
+
+    point = middleware._save_point.call_args[1]
+    assert len(point.get('interactions')) == 1
+    [interaction] = point['interactions']
+    assert interaction.interaction_type == 'request'
+    assert interaction.name == 'https://does-not-exist/'
diff --git a/tox.ini b/tox.ini
index 3055fef..f0e0caf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,20 +1,26 @@
 [tox]
 envlist =
+	{py37,py38}-quart
 	{py36,py37,py38}-flask-{1.1,1.0,0.11,0.12,dev}
 isolated_build = true
 
 [testenv]
-whitelist_externals = poetry
-
 setenv =
 	PYTHONWARNINGS = all
+	# When using Poetry with Tox, Pytest starts acting up. This variable was introduced largely
+	# because of the issues caused when using tox, see https://github.com/pytest-dev/pytest/issues/2042
+	PY_IGNORE_IMPORTMISMATCH = 1
 
 extras =
 	flask: flask
+	quart: quart
+	# There is a pytest extra, that provides required plugins like pytest-asyncio
+	pytest: pytest
 
 deps =
 	pytest
 
+	quart: quart>=0.12.0
 	flask-0.11: Flask>=0.11,<0.12
 	flask-0.12: Flask>=0.12,<0.13
 	flask-1.0: Flask>=1.0,<1.1
@@ -22,4 +28,4 @@ deps =
 	flask-dev: git+https://github.com/pallets/flask.git#egg=flask
 
 commands =
-    poetry run pytest {posargs}
+	pytest {posargs}