diff --git a/.gitignore b/.gitignore
index bbb2aa4..e49bafb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ lmwsip_marceln.egg-info
 test/__pycache__
 lmwsip.egg-info
 *.swp
+.tox
diff --git a/githooks/pre-commit b/githooks/pre-commit
index 8c79f31..5e1dd87 100755
--- a/githooks/pre-commit
+++ b/githooks/pre-commit
@@ -6,5 +6,5 @@ VERSION=$(grep version setup.cfg | sed 's/.*= *//')
 sed -i "s/^__version__ = .*/__version__ = '${VERSION}'/"  src/lmwsip/__init__.py
 git add lmwsip/__init__.py
 
-python setup.py test
+tox
 yamllint .drone.yml
diff --git a/setup.cfg b/setup.cfg
index aef68a0..af74cf7 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,6 +15,8 @@ classifiers =
 [options]
 package_dir =
     = src
+install_requires =
+    python-dateutil
 packages = find:
 python_requires = >= 3.6
 
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..bd622bb
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,6 @@
+[tox]
+envlist = py36,py37,py38,py310
+
+[testenv]
+deps = python-dateutil
+commands = python -m unittest -v lmwsip.tests