diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 9636b9c..dd309d3 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -39,6 +39,8 @@ jobs:
             tox_env: py39
           - py_version: "3.10"
             tox_env: py310
+          - py_version: "3.11"
+            tox_env: py311
 
     # the steps of the CI
     steps:
diff --git a/tox.ini b/tox.ini
index 02525cf..198e42e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 # content of: tox.ini , put in same dir as setup.py
 [tox]
-envlist = style, make-docs, check-manifest, docstyle, py37, py38, py39, py310, coverage
+envlist = style, make-docs, check-manifest, docstyle, py37, py38, py39, py310, py311, coverage
 
 
 [testenv]