diff --git a/.manifest.json b/.manifest.json
index 895bf0e..d4f6f29 100644
--- a/.manifest.json
+++ b/.manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.0.0"
+  ".": "3.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..7a9dd8a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,8 @@
+# Changelog
+
+## [3.0.0](https://github.com/devlsh/quadtree/compare/v2.0.0...v3.0.0) (2026-10-05)
+
+
+### Features
+
+* add interactive quadtree demo and release workflows ([defa9bf](https://github.com/devlsh/quadtree/commit/defa9bfc540518cec782a14e88b290eca3571d44))