diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..12d7fb9
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,18 @@
+# Changelog
+
+## 1.0.0 (2023-05-13)
+
+
+### Features
+
+* initial implementations ([36a867f](https://github.com/extra2000/ros2_helloworld_python/commit/36a867f4843af07a142db32bce8d8f2ed3cc96e2))
+
+
+### Documentations
+
+* **README:** update docs ([c10c92e](https://github.com/extra2000/ros2_helloworld_python/commit/c10c92eb53253e40ecfd7b969d544d3c22265a4e))
+
+
+### Continuous Integrations
+
+* add GitHub Action with semantic-release ([31dbaf3](https://github.com/extra2000/ros2_helloworld_python/commit/31dbaf3eeb0613c2020a68c7db5529b6e61842b5))
diff --git a/VERSION b/VERSION
index 6e8bf73..3eefcb9 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.0
+1.0.0
diff --git a/package.xml b/package.xml
index 44165b1..5a930f5 100644
--- a/package.xml
+++ b/package.xml
@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>ros2_helloworld_python</name>
-  <version>0.1.0</version>
+  <version>1.0.0</version>
   <description>Simple helloworld example with Python</description>
   <maintainer email="nick@extra2000.io">Nick Aizuddin</maintainer>
   <license>MIT</license>
diff --git a/setup.py b/setup.py
index ec2583c..014ec61 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 setup(
     name=package_name,
-    version='0.1.0',
+    version='1.0.0',
     packages=[package_name],
     data_files=[
         ('share/ament_index/resource_index/packages',