diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 2a6cdc6b..07c0766f 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -11,10 +11,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.9
     - name: Build wheel and source tarball
       run: |
         pip install wheel
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 95251d9b..c9efc0cf 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,10 +8,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.9
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index cdc4d01e..4a8bd62e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -25,6 +25,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - {name: '3.10', python: '3.10', os: ubuntu-latest, tox: py310}
+          - {name: '3.9', python: '3.9', os: ubuntu-latest, tox: py39}
           - {name: '3.8', python: '3.8', os: ubuntu-latest, tox: py38}
           - {name: '3.7', python: '3.7', os: ubuntu-latest, tox: py37}
           - {name: '3.6', python: '3.6', os: ubuntu-latest, tox: py36}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index bd6a7340..2ba6d1f5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,9 +1,9 @@
 default_language_version:
-  python: python3.8
+  python: python3.9
 
 repos:
--   repo: git://github.com/pre-commit/pre-commit-hooks
-    rev: v2.3.0
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.1.0
     hooks:
     -   id: check-merge-conflict
     -   id: check-json
@@ -16,15 +16,15 @@ repos:
         - --autofix
     -   id: trailing-whitespace
         exclude: README.md
--   repo: git://github.com/asottile/pyupgrade
-    rev: v2.24.0
+-   repo: https://github.com/asottile/pyupgrade
+    rev: v2.31.0
     hooks:
     -   id: pyupgrade
--   repo: git://github.com/ambv/black
-    rev: 19.3b0
+-   repo: https://github.com/ambv/black
+    rev: 21.12b0
     hooks:
     -   id: black
--   repo: git://github.com/PyCQA/flake8
-    rev: 3.8.4
+-   repo: https://github.com/PyCQA/flake8
+    rev: 4.0.1
     hooks:
     -   id: flake8
diff --git a/graphene/types/tests/test_objecttype.py b/graphene/types/tests/test_objecttype.py
index 1ff8fc8f..dece5e8b 100644
--- a/graphene/types/tests/test_objecttype.py
+++ b/graphene/types/tests/test_objecttype.py
@@ -191,21 +191,15 @@ def test_objecttype_as_container_all_kwargs():
 
 
 def test_objecttype_as_container_extra_args():
-    with raises(TypeError) as excinfo:
-        Container("1", "2", "3")
-
-    assert "__init__() takes from 1 to 3 positional arguments but 4 were given" == str(
-        excinfo.value
-    )
+    msg = r"__init__\(\) takes from 1 to 3 positional arguments but 4 were given"
+    with raises(TypeError, match=msg):
+        Container("1", "2", "3")  # type: ignore
 
 
 def test_objecttype_as_container_invalid_kwargs():
-    with raises(TypeError) as excinfo:
-        Container(unexisting_field="3")
-
-    assert "__init__() got an unexpected keyword argument 'unexisting_field'" == str(
-        excinfo.value
-    )
+    msg = r"__init__\(\) got an unexpected keyword argument 'unexisting_field'"
+    with raises(TypeError, match=msg):
+        Container(unexisting_field="3")  # type: ignore
 
 
 def test_objecttype_container_benchmark(benchmark):
diff --git a/setup.py b/setup.py
index ae59a92a..517fd7b3 100644
--- a/setup.py
+++ b/setup.py
@@ -45,17 +45,17 @@ class PyTest(TestCommand):
 
 
 tests_require = [
-    "pytest>=5.3,<6",
-    "pytest-benchmark>=3.2,<4",
-    "pytest-cov>=2.8,<3",
-    "pytest-mock>=2,<3",
-    "pytest-asyncio>=0.10,<2",
-    "snapshottest>=0.5,<1",
-    "coveralls>=1.11,<2",
+    "pytest>=6,<7",
+    "pytest-benchmark>=3.4,<4",
+    "pytest-cov>=3,<4",
+    "pytest-mock>=3,<4",
+    "pytest-asyncio>=0.16,<2",
+    "snapshottest>=0.6,<1",
+    "coveralls>=3.3,<4",
     "promise>=2.3,<3",
     "mock>=4.0,<5",
-    "pytz==2021.1",
-    "iso8601>=0.1,<2",
+    "pytz==2021.3",
+    "iso8601>=1,<2",
 ]
 
 dev_requires = ["black==19.10b0", "flake8>=3.7,<4"] + tests_require
@@ -78,6 +78,8 @@ setup(
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
     ],
     keywords="api graphql protocol rest relay graphene",
     packages=find_packages(exclude=["examples*"]),
diff --git a/tox.ini b/tox.ini
index c4bf6ad0..96a40546 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = flake8,py36,py37,py38,pre-commit,mypy
+envlist = py3{6,7,8,9,10}, flake8, mypy, pre-commit
 skipsdist = true
 
 [testenv]
@@ -8,28 +8,28 @@ deps =
 setenv =
      PYTHONPATH = .:{envdir}
 commands =
-    py{36,37,38}: pytest --cov=graphene graphene examples {posargs}
+    py{36,37,38,39,310}: pytest --cov=graphene graphene examples {posargs}
 
 [testenv:pre-commit]
-basepython=python3.8
+basepython = python3.9
 deps =
-    pre-commit>=2,<3
+    pre-commit>=2.16,<3
 setenv =
     LC_CTYPE=en_US.UTF-8
 commands =
     pre-commit run --all-files --show-diff-on-failure
 
 [testenv:mypy]
-basepython=python3.8
+basepython = python3.9
 deps =
-    mypy>=0.761,<1
+    mypy>=0.931,<1
 commands =
     mypy graphene
 
 [testenv:flake8]
-basepython=python3.8
+basepython = python3.9
 deps =
-    flake8>=3.8,<4
+    flake8>=4,<5
 commands =
     pip install --pre -e .
     flake8 graphene