diff --git a/tabulate.py b/tabulate.py
index 5d57167..1965fcc 100755
--- a/tabulate.py
+++ b/tabulate.py
@@ -5,17 +5,17 @@
 from __future__ import print_function
 from __future__ import unicode_literals
 from collections import namedtuple
-from platform import python_version_tuple
+import sys
 import re
 import math
 
 
-if python_version_tuple() >= ("3", "3", "0"):
+if sys.version_info >= (3, 3):
     from collections.abc import Iterable
 else:
     from collections import Iterable
 
-if python_version_tuple()[0] < "3":
+if sys.version_info[0] < 3:
     from itertools import izip_longest
     from functools import partial
 
diff --git a/tox.ini b/tox.ini
index c9f4e98..a20b325 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,7 +8,7 @@
 # for testing and it is disabled by default.
 
 [tox]
-envlist = lint, py27, py35, py36, py37, py38
+envlist = lint, py27, py35, py36, py37, py38, py39, py310
 
 [testenv]
 commands = pytest -v --doctest-modules --ignore benchmark.py
@@ -97,6 +97,40 @@ deps =
     pandas
     wcwidth
 
+
+[testenv:py39]
+basepython = python3.9
+commands = pytest -v --doctest-modules --ignore benchmark.py
+deps =
+    pytest
+
+[testenv:py39-extra]
+basepython = python3.9
+commands = pytest -v --doctest-modules --ignore benchmark.py
+deps =
+    pytest
+    numpy
+    pandas
+    wcwidth
+
+
+[testenv:py310]
+basepython = python3.10
+commands = pytest -v --doctest-modules --ignore benchmark.py
+deps =
+    pytest
+
+[testenv:py310-extra]
+basepython = python3.10
+setenv = PYTHONDEVMODE = 1
+commands = pytest -v --doctest-modules --ignore benchmark.py
+deps =
+    pytest
+    numpy
+    pandas
+    wcwidth
+
+
 [flake8]
 max-complexity = 22
 max-line-length = 99