diff --git a/requirements.txt b/requirements.txt
index 824081c..51553d6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 attrs==21.4.0
 black==22.1.0
 click==8.1.3
+python-dateutil==2.8.2
 flake8==4.0.1
 iniconfig==1.1.1
 isort==5.10.1
diff --git a/setup.py b/setup.py
index e00dd86..3e13ed2 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@ license = open("LICENSE").read().strip()
 
 setup(
     name="pyfacts",
-    version=open("VERSION").read().strip(),
+    version="0.0.1",
     license=license,
     author="Gourav Kumar",
     author_email="gouravkr@outlook.in",
diff --git a/tox.ini b/tox.ini
index 6f0169e..0be3ea8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,11 @@
 [tox]
 minversion = 3.8.0
-envlist = py38,py39,py310
+envlist = py38,py39,py310,py311
 
 [testenv]
 deps = pytest
-commands = pytest
+        python-dateutil
+commands = pytest tests
 
 [flake8]
 max-line-length=125
\ No newline at end of file