diff --git a/.gitignore b/.gitignore
index 757fee3..7f1e10f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,5 @@
-/.idea
\ No newline at end of file
+/.idea
+/dist
+/src/btoa.egg-info
+/venv
+__pycache__
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..1448189
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,21 @@
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "btoa"
+version = "1.0"
+authors = [
+  { name="LazyDeus", email="dimaprodeus@yandex.ru" },
+]
+description = "Python implementation btoa and atob functions from javascript"
+requires-python = ">=3.6"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+]
+
+[project.urls]
+"Homepage" = "https://github.com/Demetrous-fd/btoa"
+"Bug Tracker" = "https://github.com/Demetrous-fd/btoa/issues"
\ No newline at end of file
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 9719db5..0000000
--- a/setup.py
+++ /dev/null
@@ -1,13 +0,0 @@
-from setuptools import setup
-
-setup(
-    name='btoa',
-    version='1.0',
-    description='Python implementation btoa and atob functions from javascript',
-    url='https://github.com/Demetrous-fd/btoa',
-    author='LazyDeus',
-    author_email='dimaprodeus@yandex.ru',
-    license='MIT',
-    packages=['mypackage'],
-    zip_safe=False
-)
diff --git a/__init__.py b/src/btoa/__init__.py
similarity index 100%
rename from __init__.py
rename to src/btoa/__init__.py
diff --git a/main.py b/src/btoa/main.py
similarity index 100%
rename from main.py
rename to src/btoa/main.py
diff --git a/tests/main.py b/tests/main.py
new file mode 100644
index 0000000..f37171e
--- /dev/null
+++ b/tests/main.py
@@ -0,0 +1,25 @@
+from unittest import TestCase
+
+from btoa import btoa, atob
+
+
+class MainCase(TestCase):
+    def test_btoa(self):
+        self.assertEqual(
+            btoa("Hello World"),
+            "SGVsbG8gV29ybGQ="
+        )
+        self.assertEqual(
+            btoa('s8ë{LóüÈ@É"¹ÏLôa"¢f#½2r[¢ÀCwÀ¯ÅaõdUí£tùºm94±]!'),
+            "czjre0zz/MhAySK5z0z0YSKiZiO9MnJbosBDd8CvxWH1ZFXto3T5um05NLFdIQ=="
+        )
+
+    def test_atob(self):
+        self.assertEqual(
+            atob("SGVsbG8gV29ybGQ="),
+            "Hello World"
+        )
+        self.assertEqual(
+            atob("czjre0zz/MhAySK5z0z0YSKiZiO9MnJbosBDd8CvxWH1ZFXto3T5um05NLFdIQ=="),
+            's8ë{LóüÈ@É"¹ÏLôa"¢f#½2r[¢ÀCwÀ¯ÅaõdUí£tùºm94±]!'
+        )