diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e17896..9c775d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,2 +1,13 @@
 # Changelog
 All notable changes to this project will be documented in this file.
+
+## [1.0.0] - 2024-10-17
+
+### Features
+
+- Add milestone to merged PRs automatically
+- Ignore closed PR that has not been merged (#30)
+- Check previous milestone for `--force` flag, close #27 (#33)
+
+# Changelog
+All notable changes to this project will be documented in this file.