diff --git a/.github/workflows/test-package.yml b/.github/workflows/test-package.yml
index ecd5455..9179def 100644
--- a/.github/workflows/test-package.yml
+++ b/.github/workflows/test-package.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: false
       matrix:
         platform: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11', 'pypy-3.8', 'pypy-3.9']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', 'pypy-3.8', 'pypy-3.9']
 
     steps:
 
diff --git a/pyproject.toml b/pyproject.toml
index 6b59a1f..cdf85db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,6 +29,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Topic :: Software Development :: Build Tools",
 ]
diff --git a/tox.ini b/tox.ini
index 834bc76..e71b430 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{38,39,310,311},
+    py{38,39,310,311,312},
 
 [testenv]
 basepython =
@@ -8,6 +8,7 @@ basepython =
     py39: python3.9
     py310: python3.10
     py311: python3.11
+    py312: python3.12
 
 passenv = CI,GITHUB_WORKFLOW
 
@@ -18,5 +19,5 @@ deps =
 commands =
     pre-commit run -a
     mypy --install-types --non-interactive
-    coverage run --append -m unittest codicefiscale
+    coverage run --append --source=codicefiscale -m unittest
     coverage report --show-missing --ignore-errors