diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -190,6 +190,10 @@ Table of Contents
 - [UC Santa Cruz CSE 202 Combinatorial Algorithms spring 2021, by Seshadhri Comandur](https://www.youtube.com/playlist?list=PLOQjlWvnI0fbn9zAJfvJoQF1nc50KQR9g)
 - [UC Santa Cruz CSE 104, 204 Computational Complexity spring 2022, by Seshadhri Comandur](https://www.youtube.com/playlist?list=PLOQjlWvnI0fYMPFnJeVZ0kt4KPwWcbF0o) ([Fall 2020](https://www.youtube.com/playlist?list=PLOQjlWvnI0fas529oXenovd3MyafNQbKl))
 - [UC Santa Cruz CSE 290A Randomized Algorithms spring 2020, by Seshadhri Comandur](https://www.youtube.com/playlist?list=PLOQjlWvnI0faRpH2oJcyW4CuM5Clt8a2n)
+- [University of Maryland CMSC351 Introduction to Algorithms, by Mohammad Hajiaghayi](https://www.youtube.com/playlist?list=PLx7SjCaKZzEJLQ9RubHk2zFuddXTD5_ac)
+- [University of Maryland CMSC858F Network Algorithms and Approximations, by Mohammad Hajiaghayi](https://www.cs.umd.edu/~hajiagha/NetDsgn11/courseNetworkDesign.html) ([YouTube playlists](https://www.youtube.com/playlist?list=PLx7SjCaKZzEIeJxOlTuXveAE5eY7WOYB9))
+- [University of Maryland CMSC858M Algorithmic Lower Bounds: Fun with Hardness Proofs, by Mohammad Hajiaghayi](https://www.cs.umd.edu/~hajiagha/ALB19/ALB19.html) ([YouTube playlists](https://www.youtube.com/playlist?list=PLx7SjCaKZzEKwynDkSTacgJGivjoB2ksn))
+- [University of Maryland UMD DATA602 / MSML602 Principles of Data Science spring 2024, by Mohammad Hajiaghayi](https://www.youtube.com/playlist?list=PLx7SjCaKZzEIzzVsO03ozPOCP7Yc-LNq_)
 - [Algorithms for Big-Data (Fall 2020) - Saket Saurabh](https://sites.google.com/view/sakethome/teaching/algorithms-for-big-data-fall-2020)
 - [CS498ABD - Algorithms for Big Data - UIUC, Fall 2020](https://courses.engr.illinois.edu/cs498abd/fa2020/schedule.html)
 - [Advanced Data Structures](https://www.youtube.com/playlist?list=PLN-ShipRKQ0h6jIphD381pHdQtj_APRM8)