diff --git a/src/data-structures/tree/avl-tree/README.md b/src/data-structures/tree/avl-tree/README.md
index 452a9eb4..e8fb49e2 100644
--- a/src/data-structures/tree/avl-tree/README.md
+++ b/src/data-structures/tree/avl-tree/README.md
@@ -45,4 +45,4 @@ AVL tree with balance factors (green)
 * [Tutorials Point](https://www.tutorialspoint.com/data_structures_algorithms/avl_tree_algorithm.htm)
 * [BTech](http://btechsmartclass.com/DS/U5_T2.html)
 * [AVL Tree Insertion on YouTube](https://www.youtube.com/watch?v=rbg7Qf8GkQ4&list=PLLXdhg_r2hKA7DPDsunoDZ-Z769jWn4R8&index=12&)
-* [AVL Tree Operations Visualisations](https://www.cs.usfca.edu/~galles/visualization/AVLtree.html)
+* [AVL Tree Interactive Visualisations](https://www.cs.usfca.edu/~galles/visualization/AVLtree.html)
diff --git a/src/data-structures/tree/binary-search-tree/README.md b/src/data-structures/tree/binary-search-tree/README.md
index 0bdff61b..cb914db8 100644
--- a/src/data-structures/tree/binary-search-tree/README.md
+++ b/src/data-structures/tree/binary-search-tree/README.md
@@ -31,3 +31,4 @@ The leaves are not drawn.
 
 - [Wikipedia](https://en.wikipedia.org/wiki/Binary_search_tree)
 - [Inserting to BST on YouTube](https://www.youtube.com/watch?v=wcIRPqTR3Kc&list=PLLXdhg_r2hKA7DPDsunoDZ-Z769jWn4R8&index=9&t=0s)
+- [BST Interactive Visualisations](https://www.cs.usfca.edu/~galles/visualization/BST.html)