diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..b562f73
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+recursive-include tests *.py
diff --git a/README.md b/README.md
index 1f6a407..5f34ee0 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ import linalg as la
 print(
     la.Solution(
         la.System(
-            la.Matrix(
+            la.TridiagonalMatrix(
                 [4, 9],
                 [23, 5],
                 [5, 16, 2]
diff --git a/linalg/__init__.py b/linalg/__init__.py
index 11f259f..40cf9cd 100644
--- a/linalg/__init__.py
+++ b/linalg/__init__.py
@@ -1,3 +1,5 @@
+__version__ = '0.0.1'
+
 from .base.any_vector import *
 from .base.any_matrix import *
 from .base.any_system import *
diff --git a/pyproject.toml b/pyproject.toml
index 479d38e..1abca0d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,2 +1,6 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
 [tool.mypy]
 ignore_missing_imports = true
diff --git a/setup.cfg b/setup.cfg
index f7f1cf4..41c1605 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,3 +1,25 @@
+[metadata]
+name = linalg
+version = attr: linalg.__version__
+author = Fedor Pashin
+author_email = fedorpashin@icloud.com
+description = Linear algebra in object-oriented way.
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://github.com/fedorpashin/linalg
+license = MIT License
+license_file = LICENSE.txt
+
+[options]
+zip_safe = False
+package_dir = = .
+packages = find_namespace:
+install_requires =
+    final_class
+    overrides
+    multimethod
+    numpy
+
 [flake8]
 ignore = F811, F401, F403
 max-line-length = 120