diff --git a/README.md b/README.md
index 0c73041..d9a5178 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ TinySTL
   * skip list
   * binary search tree
   * AVL tree
+  * rbtree
   * 线段树
   * splay tree
   * rope