diff --git a/README.md b/README.md
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+++ b/README.md
@@ -128,7 +128,7 @@ Courses
 - [CS 4400 – Computer Systems   Fall 2016 - UoUtah](https://www.eng.utah.edu/~cs4400/)
 - [Systems - Aduni](http://aduni.org/courses/systems/index.php?view=cw)
 - **Operating Systems**
-	- [CS124 Operating Systems - California Institute of Technology](http://users.cms.caltech.edu/~donnie/cs124/)
+	- [CS124 Operating Systems - California Institute of Technology, Fall 2018 - Youtube](https://www.youtube.com/playlist?list=PL3swII2vlVoVbav6FV98pidq6BsTN4u56)
 	- [CS 162 Operating Systems and Systems Programming, Spring 2015 - University of California, Berkeley](https://archive.org/details/ucberkeley-webcast-PL-XXv-cvA_iBDyz-ba4yDskqMDY6A1w_c?sort=titleSorter)
 	- [CS 4414 - Operating Systems, University of Virginia (rust-class)](http://rust-class.org/pages/classes.html)
 	- [CS 4414 Operating Systems, Fall 2018 - University of Virginia](https://www.cs.virginia.edu/~cr4bd/4414/F2018/schedule.html)