diff --git a/README.md b/README.md
index 7719429..6e79ad8 100644
--- a/README.md
+++ b/README.md
@@ -36,9 +36,12 @@ See `titles.txt` for the bookmark titles used by the script.
 -   Chapter 21: Network Attack and Defence
 -   Chapter 22: Phones
 -   Chapter 23: Electronic and Information Warfare
+-   Chapter 24: Copyright and DRM
+-   Chapter 25: Taking Stock
 -   Chapter 26: Surveillance or Privacy?
--   Chapter 27: Managing the Development of Secure Systems
+-   Chapter 27: Secure Systems Development
 -   Chapter 28: Assurance and Sustainability
+-   Chapter 29: Beyond 'Computer Says No'
 -   Bibliography
 
 ## How to generate the book?
diff --git a/urls.txt b/urls.txt
index f4baac6..801223b 100644
--- a/urls.txt
+++ b/urls.txt
@@ -3,10 +3,10 @@ https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch1-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch2-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch3-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch4-3aug.pdf
-https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch5-3aug.pdf
+https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch5-dec18.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch6-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch7-3aug.pdf
-https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch8-dec18.pdf
+https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch8-1sep.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch9-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch10-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch11-3aug.pdf
@@ -23,7 +23,9 @@ https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch21-mar17.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch22-jul10.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch23-jun5.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch24-3aug.pdf
+https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch25-1sep.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch26-3aug.pdf
 https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch27-3aug.pdf
-https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch28-3aug.pdf
-https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-bib-3aug.pdf
+https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch28-1sep.pdf
+https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-ch29-1sep.pdf
+https://www.cl.cam.ac.uk/~rja14/Papers/SEv3-bib-1sep.pdf
\ No newline at end of file