diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1eb6712..43b87a2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/setup.py b/setup.py
index ca7160b..bc86b2b 100644
--- a/setup.py
+++ b/setup.py
@@ -36,5 +36,6 @@
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
     ],
 )
diff --git a/tox.ini b/tox.ini
index c022ad8..7aae6ed 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py36, py37, py38, lint
+envlist = py36, py37, py38, py39, lint
 skip_missing_interpreters = True
 
 [gh-actions]
@@ -7,6 +7,7 @@ python =
     3.6: py36, lint
     3.7: py37
     3.8: py38
+    3.9: py39
 
 [testenv]
 commands =