diff --git a/CHANGELOG.md b/CHANGELOG.md
index b500b8d..a3b0b50 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Change Log
 
+## 1.0.0 (2024-07-06)
+
+### Refactor
+
+- update ruff lint rules and fix tests
+- remove deprecated function
+
 ## 0.9.0 (2023-12-20)
 
 ### BREAKING CHANGE
diff --git a/pyproject.toml b/pyproject.toml
index 2b557c2..24319de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pyentrp"
-version = "0.9.0"
+version = "1.0.0"
 description = "A Python library for computing entropy measures for time series analysis."
 authors = ["Nikolay Donets <nd@donets.org>"]
 license = "apache-2.0"
diff --git a/setup.py b/setup.py
index 0e25675..f3a7cd4 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 setup(
     name="pyentrp",
-    version="0.9.0",
+    version="1.0.0",
     description="Functions on top of NumPy for computing different types of entropy",
     long_description=long_description,
     long_description_content_type="text/markdown",