diff --git a/extras/courses.md b/extras/courses.md
index 8320cad..f60c73b 100644
--- a/extras/courses.md
+++ b/extras/courses.md
@@ -55,6 +55,7 @@ Courses | Duration | Effort
 Courses | Duration | Effort
 :-- | :--: | :--:
 [Analysis of Algorithms](https://www.coursera.org/course/aofa)| 6 weeks | 6-8 hours/week
+[Discrete Optimization](https://www.coursera.org/course/optimization)| 9 weeks of study | 10-20 hours/week
 
 ### Programming Paradigms