Update tox

tox.ini

@@ -1,37 +1,42 @@
 [tox]
-envlist = flake8,py36,py37,py38,pre-commit,mypy
+envlist = py{36,37,38,39,310},flake8,pre-commit,mypy
-skipsdist = true
+
+[gh-actions]
+python =
+    3.6: py36
+    3.7: py37
+    3.8: py38
+    3.9: py39
+    3.10-dev: py310
 
 [testenv]
+passenv = *
+usedevelop = True
 deps =
-    .[test]
+    -e.[test]
+    py{36,37,38,39,310}: pytest-asyncio
 setenv =
      PYTHONPATH = .:{envdir}
 commands =
-    py{36,37,38}: pytest --cov=graphene graphene examples {posargs}
+    py{36,37,38,39,310}: py.test --cov=graphene graphene examples {posargs}
 
 [testenv:pre-commit]
-basepython=python3.7
 deps =
-    pre-commit>=2,<3
+    pre-commit>0.12.0
 setenv =
     LC_CTYPE=en_US.UTF-8
 commands =
     pre-commit {posargs:run --all-files}
 
 [testenv:mypy]
-basepython=python3.7
 deps =
-    mypy>=0.761,<1
+    mypy
+    types-six
 commands =
     mypy graphene
 
 [testenv:flake8]
-basepython=python3.7
+deps = flake8
-deps =
-    flake8>=3.7,<4
 commands =
-    pip install --pre -e .
+    pip install -e .
     flake8 graphene
-
-[pytest]