diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e7851a..b217769 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@ All notable changes to this project will be documented in this file.
 - [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
 - [`auto-changelog`](https://github.com/CookPete/auto-changelog)
 
-## [v1.46.9](https://github.com/zrwusa/data-structure-typed/compare/v1.35.0...main) (upcoming)
+## [v1.47.0](https://github.com/zrwusa/data-structure-typed/compare/v1.35.0...main) (upcoming)
 
 ### Changes
 
diff --git a/src/data-structures/binary-tree/avl-tree.ts b/src/data-structures/binary-tree/avl-tree.ts
index c04cad7..17d74df 100644
--- a/src/data-structures/binary-tree/avl-tree.ts
+++ b/src/data-structures/binary-tree/avl-tree.ts
@@ -53,7 +53,7 @@ export class AVLTree<V = any, N extends AVLTreeNode<V, N> = AVLTreeNode<V, AVLTr
     return new AVLTreeNode<V, N>(key, value) as N;
   }
 
-  override createTree(options?: AVLTreeOptions) {
+  override createTree(options?: AVLTreeOptions): TREE {
     return new AVLTree<V, N, TREE>({ ...this.options, ...options }) as TREE;
   }