diff --git a/extras/courses.md b/extras/courses.md
index 18bf5b7..f417a27 100644
--- a/extras/courses.md
+++ b/extras/courses.md
@@ -128,6 +128,8 @@ Courses | Duration | Effort
 Courses | Duration | Effort
 :-- | :--: | :--:
 [Applied Cryptography](https://www.udacity.com/course/applied-cryptography--cs387)| 8 weeks | 6 hours/week
+[Cryptography](https://www.coursera.org/learn/cryptography/)| 7 weeks | 4-7 hours/week
+
 
 ### Security