diff --git a/README.md b/README.md
index 96550a5..bb9bb7b 100644
--- a/README.md
+++ b/README.md
@@ -2077,7 +2077,7 @@ function Squash-Commits {
 * [Learn Enough Git to Be Dangerous](https://www.learnenough.com/git-tutorial) - A book by Michael Hartl covering Git from basics
 * [Pro Git](https://git-scm.com/book/en/v2) - Scott Chacon and Ben Straub's excellent book about Git
 * [Git Internals](https://github.com/pluralsight/git-internals-pdf) - Scott Chacon's other excellent book about Git
-* [Nasa handbook](https://www.nasa.gov/sites/default/files/atoms/files/nasa_systems_engineering_handbook.pdf)
+* [Nasa handbook](https://www.nasa.gov/wp-content/uploads/2018/09/nasa_systems_engineering_handbook_0.pdf)
 
 ## Tutorials