diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 1c7dac3..cbffc14 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,18 @@
 Changelog
 =========
 
+-------------------
+1.0.0 - 2025-01-05
+-------------------
+
+Refactor
+========
+
+-  Generic
+
+   -  Support only Python version greater or euqal than 3.9
+   -  Use pyproject.toml instead of setup.py
+
 -------------------
 0.12.6 - 2024-12-08
 -------------------
diff --git a/pyproject.toml b/pyproject.toml
index 3c6c71d..54aa36b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = 'setuptools.build_meta'
 
 [project]
 name = 'CryptoDataHub'
-version = '0.12.6'
+version = '1.0.0'
 description = 'Repository of cryptography-related data'
 authors = [
     {name = 'Szilárd Pfeiffer', email = 'coroner@pfeifferszilard.hu'}
@@ -13,7 +13,7 @@ maintainers = [
     {name = 'Szilárd Pfeiffer', email = 'coroner@pfeifferszilard.hu'}
 ]
 classifiers=[
-    'Development Status :: 4 - Beta',
+    'Development Status :: 5 - Production/Stable',
     'Environment :: Console',
     'Framework :: tox',
     'Intended Audience :: Information Technology',