diff --git a/print.html b/print.html
index f025766..128297e 100644
--- a/print.html
+++ b/print.html
@@ -708,7 +708,7 @@ <h1 id="introduction"><a class="header" href="#introduction">Introduction</a></h
 <li><a href="https://gist.github.com/vegard/22200a9f91af138a99ae22a9b814a9a4">Getting started with Linux kernel development</a></li>
 <li><a href="http://www.linuxfromscratch.org/">Linux From Scratch</a></li>
 <li><a href="https://greenteapress.com/thinkos/thinkos.pdf">Think OS. A Brief Introduction to Operating Systems</a></li>
-<li><a href="https://csapp.cs.cmu.edu/">Computer Systems: A Programmer's Perspective</a></li>
+<li><a href="http://csapp.cs.cmu.edu/3e/home.html">Computer Systems: A Programmer's Perspective</a></li>
 <li><a href="https://diveintosystems.org/singlepage/">Dive into Systems</a></li>
 <li><a href="https://www.cs.princeton.edu/~bwk/upe/upe.html">Kernighan and Pike, The Unix Programming Environment</a></li>
 <li><a href="https://man7.org/tlpi/">Kerrisk, The Linux Programming Interface</a></li>
diff --git a/system-programming.html b/system-programming.html
index 6dd5011..8b6e259 100644
--- a/system-programming.html
+++ b/system-programming.html
@@ -187,7 +187,7 @@ <h2 id="system-programming"><a class="header" href="#system-programming">System
 <li><a href="https://gist.github.com/vegard/22200a9f91af138a99ae22a9b814a9a4">Getting started with Linux kernel development</a></li>
 <li><a href="http://www.linuxfromscratch.org/">Linux From Scratch</a></li>
 <li><a href="https://greenteapress.com/thinkos/thinkos.pdf">Think OS. A Brief Introduction to Operating Systems</a></li>
-<li><a href="https://csapp.cs.cmu.edu/">Computer Systems: A Programmer's Perspective</a></li>
+<li><a href="http://csapp.cs.cmu.edu/3e/home.html">Computer Systems: A Programmer's Perspective</a></li>
 <li><a href="https://diveintosystems.org/singlepage/">Dive into Systems</a></li>
 <li><a href="https://www.cs.princeton.edu/~bwk/upe/upe.html">Kernighan and Pike, The Unix Programming Environment</a></li>
 <li><a href="https://man7.org/tlpi/">Kerrisk, The Linux Programming Interface</a></li>