diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e7280577..0556eefe 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.8, 3.9]
+        python-version: [3.5, 3.6, 3.7, 3.8, 3.9]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
diff --git a/tox.ini b/tox.ini
index a7012d7e..373b2268 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist=
-    coveralls, pylint, flake8, pydocstyle, py27, py34, py35, py36, py37, py3.8, py3.9, pypy, pypy3
+    coveralls, pylint, flake8, pydocstyle, py27, py34, py3.5, py3.6, py3.7, py3.8, py3.9, pypy, pypy3
 
 [testenv]
 deps=
@@ -48,7 +48,7 @@ extras=
 commands=
     unit2 discover -s tests/unit -p test_*_py3.py
 
-[testenv:py35]
+[testenv:py3.5]
 deps=
     unittest2
 extras=