diff --git a/.github/workflows/pythondoc.yml b/.github/workflows/pythondoc.yml
index b45f8349..7d0f5f23 100644
--- a/.github/workflows/pythondoc.yml
+++ b/.github/workflows/pythondoc.yml
@@ -40,7 +40,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install Sphinx furo
+        pip install .[docs]
         make install
     - name: Generate docs
       run: |
diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index ddf8c1f0..c4e7ae1a 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -47,6 +47,6 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install pytest syrupy
+          pip install .[dev]
       - name: Test
         run: make test
diff --git a/Makefile b/Makefile
index 8276dc0f..a12db61b 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ doc:
 	cd docs && make html
 
 opendoc:
-	cd docs/build/html && python -m http.server 8765
+	cd docs/build/html && python -m http.server 8765 -b 127.0.0.1
 
 clean:
 	rm -rf build/ dist/ *.egg-info .pytest_cache
diff --git a/README.md b/README.md
index 9a5af51b..f644d2f5 100644
--- a/README.md
+++ b/README.md
@@ -27,10 +27,10 @@ Install with pip: `pip install spectree`. If you'd like for email fields to be v
 
 ### Examples
 
-Check the [examples](/examples) folder.
+Check the [examples](examples) folder.
 
-* [flask example](/examples/flask_demo.py)
-* [falcon example with logging when validation failed](/examples/falcon_demo.py)
+* [flask example](examples/flask_demo.py)
+* [falcon example with logging when validation failed](examples/falcon_demo.py)
 * [starlette example](examples/starlette_demo.py)
 
 ### Step by Step
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 17c21297..c0e095a8 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -24,6 +24,7 @@
 
 
 # -- General configuration ---------------------------------------------------
+autodoc_class_signature = "separated"
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
@@ -32,6 +33,7 @@
     "sphinx.ext.viewcode",
     "sphinx.ext.autodoc",
     "sphinx.ext.githubpages",
+    "myst_parser",
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -41,6 +43,8 @@
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path.
 exclude_patterns = []
+source_suffix = [".rst", ".md"]
+language = "en"
 
 
 # -- Options for HTML output -------------------------------------------------
@@ -48,7 +52,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = "furo"
+html_theme = "shibuya"
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
diff --git a/docs/source/index.md b/docs/source/index.md
new file mode 100644
index 00000000..974f3bfd
--- /dev/null
+++ b/docs/source/index.md
@@ -0,0 +1,35 @@
+```{eval-rst}
+.. meta::
+    :description lang=en:
+        SpecTree is an API spec validator and OpenAPI document generator for Python web frameworks.
+```
+
+```{include} ../../README.md
+```
+
+```{toctree}
+---
+maxdepth: 2
+hidden:
+caption: API reference
+---
+spectree
+config
+response
+models
+utils
+plugins
+```
+
+```{toctree}
+---
+hidden:
+caption: Project Links
+---
+
+GitHub <https://github.com/0b01001001/spectree>
+```
+
+## Indices and tables
+
+- {ref}`genindex`
diff --git a/docs/source/index.rst b/docs/source/index.rst
deleted file mode 100644
index 63c64d0a..00000000
--- a/docs/source/index.rst
+++ /dev/null
@@ -1,113 +0,0 @@
-.. spectree documentation master file, created by
-   sphinx-quickstart on Sun Dec  1 16:11:49 2019.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
-
-.. meta::
-    :description lang=en:
-        SpecTree is an API spec validator and OpenAPI document generator for Python web frameworks.
-
-Welcome to spectree's documentation!
-====================================
-
-|GitHub Actions| |pypi| |versions| |Language grade: Python|
-|Documentation Status|
-
-Yet another library to generate OpenAPI document and validate request &
-response with Python annotations.
-
-Features
---------
-
--  Less boilerplate code, annotations are really easy-to-use
--  Generate API document with `Redoc UI`_ or `Swagger UI`_
--  Validate query, JSON data, response data with `pydantic`_
--  Current support:
-
-   -  Flask
-   -  Falcon (including Falcon ASGI)
-   -  Starlette
-
-Quick Start
------------
-
-Install with pip: ``pip install spectree``. If you'd like for email fields to be validated, use ``pip install spectree[email]``.
-
-
-Examples
-~~~~~~~~
-
-Check the `examples`_ folder.
-
-Step by Step
-~~~~~~~~~~~~
-
-1. Define your data structure used in (query, json, headers, cookies,
-   resp) with ``pydantic.BaseModel``
-2. create ``spectree.SpecTree`` instance with the web framework name you
-   are using, like ``api = SpecTree('flask')``
-3. ``api.validate`` decorate the route with
-
-   -  ``query``
-   -  ``json``
-   -  ``headers``
-   -  ``cookies``
-   -  ``resp``
-   -  ``tags``
-
-4. access these data with ``context(query, json, headers, cookies)`` (of
-   course, you can access these from the original place where the
-   framework offered)
-
-   -  flask: ``request.context``
-   -  falcon: ``req.context``
-   -  starlette: ``request.context``
-
-5. register to the web application ``api.register(app)``
-6. check the document at URL location ``/apidoc/redoc`` or
-   ``/apidoc/swagger``
-
-FAQ
----
-
-   ValidationError: missing field for headers
-
-The HTTP headers’ keys in Flask are capitalized, in Falcon are upper
-cases, in Starlette are lower cases.
-
-.. _Redoc UI: https://github.com/Redocly/redoc
-.. _Swagger UI: https://github.com/swagger-api/swagger-ui
-.. _pydantic: https://github.com/samuelcolvin/pydantic/
-.. _examples: https://github.com/0b01001001/spectree/blob/master/examples
-
-.. |GitHub Actions| image:: https://github.com/0b01001001/spectree/workflows/Python%20package/badge.svg
-   :target: https://github.com/0b01001001/spectree/actions
-.. |pypi| image:: https://img.shields.io/pypi/v/spectree.svg
-   :target: https://pypi.python.org/pypi/spectree
-.. |versions| image:: https://img.shields.io/pypi/pyversions/spectree.svg
-   :target: https://github.com/0b01001001/spectree
-.. |Language grade: Python| image:: https://img.shields.io/lgtm/grade/python/g/0b01001001/spectree.svg?logo=lgtm&logoWidth=18
-   :target: https://lgtm.com/projects/g/0b01001001/spectree/context:python
-.. |Documentation Status| image:: https://readthedocs.org/projects/spectree/badge/?version=latest
-   :target: https://spectree.readthedocs.io/en/latest/?badge=latest
-
-
-.. toctree::
-   :maxdepth: 2
-   :caption: Contents:
-
-   spectree
-   config
-   response
-   plugins
-   models
-   utils
-
-
-
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`modindex`
-* :ref:`search`
diff --git a/pyproject.toml b/pyproject.toml
index 7153d125..5d0c3984 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,8 @@ starlette = [
 ]
 docs = [
     "Sphinx",
-    "furo",
+    "shibuya",
+    "myst-parser",
 ]
 
 [project.urls]
diff --git a/setup.py b/setup.py
index de1217cf..261746b5 100644
--- a/setup.py
+++ b/setup.py
@@ -25,7 +25,8 @@
         ],
         "docs": [
             "Sphinx",
-            "furo",
+            "shibuya",
+            "myst-parser",
         ],
     },
 )
diff --git a/spectree/spec.py b/spectree/spec.py
index 49539cfb..33542f89 100644
--- a/spectree/spec.py
+++ b/spectree/spec.py
@@ -37,7 +37,8 @@ class SpecTree:
     """
     Interface
 
-    :param str backend_name: choose from ('flask', 'falcon', 'falcon-asgi', 'starlette')
+    :param str backend_name: choose from
+        ('flask', 'quart', 'falcon', 'falcon-asgi', 'starlette')
     :param backend: a backend that inherit `SpecTree.plugins.base.BasePlugin`, this will
         override the `backend_name` if provided
     :param app: backend framework application instance (can be registered later)
diff --git a/tests/test_response.py b/tests/test_response.py
index 1ba509c2..daa24cda 100644
--- a/tests/test_response.py
+++ b/tests/test_response.py
@@ -112,7 +112,7 @@ def test_list_model():
     model = resp.find_model(200)
     expect_model = gen_list_model(JSON)
     assert get_type_hints(model) == get_type_hints(expect_model)
-    assert type(model) == type(expect_model)
+    assert type(model) is type(expect_model)
     assert issubclass(model, BaseModel)
     data = [
         {"name": "a", "limit": 1},