diff --git a/Introduction/README.md b/Introduction/README.md
index ca8897826..a30c0e3ff 100644
--- a/Introduction/README.md
+++ b/Introduction/README.md
@@ -18,7 +18,7 @@
 **Required:**
 
 - [Reinforcement Learning: An Introduction](http://incompleteideas.net/book/RLbook2018.pdf) - Chapter 1: The Reinforcement Learning Problem
-- David Silver's RL Course Lecture 1 - Introduction to Reinforcement Learning ([video](https://www.youtube.com/watch?v=2pWv7GOvuf0), [slides](http://www0.cs.ucl.ac.uk/staff/d.silver/web/Teaching_files/intro_RL.pdf))
+- David Silver's RL Course Lecture 1 - Introduction to Reinforcement Learning ([video](https://www.youtube.com/watch?v=2pWv7GOvuf0), [slides](https://www.davidsilver.uk/wp-content/uploads/2020/03/intro_RL.pdf)
 - [OpenAI Gym Tutorial](https://gym.openai.com/docs)
 
 **Optional:**