diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index ed402f3..6b24bf8 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
+        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9, "3.10"]
 
     steps:
     - uses: actions/checkout@v2
diff --git a/README.rst b/README.rst
index 4ccd1ef..1488dc2 100644
--- a/README.rst
+++ b/README.rst
@@ -16,7 +16,7 @@ Features
 --------
 
 - Support Client part of **CAS** version 1.0, 2.0 and 3.0.
-- Support Python 2.7, 3.5, 3.6, 3.7, 3.8, 3.9
+- Support Python 2.7, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10
 
 
 Documentation
diff --git a/tox.ini b/tox.ini
index fb70797..c0368db 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist=
-    py{27,35,36,37,38,39}
+    py{27,35,36,37,38,39,310}
     flake8
     isort