diff --git a/core/MAINTAINERS.txt b/core/MAINTAINERS.txt
index fd7a36a..d4b5570 100644
--- a/core/MAINTAINERS.txt
+++ b/core/MAINTAINERS.txt
@@ -27,6 +27,12 @@ Ajax system
 - Alex Bronstein 'effulgentsia' http://drupal.org/user/78040
 - Earl Miles 'merlinofchaos' http://drupal.org/user/26979
 
+Asset library system
+- ?
+
+Authentication and authorization system
+- ?
+
 Base system
 - Károly Négyesi 'chx' http://drupal.org/user/9446
 - Damien Tournoud 'DamZ' http://drupal.org/user/22211
@@ -37,6 +43,9 @@ Base system
 Batch system
 - Yves Chedemois 'yched' http://drupal.org/user/39567
 
+Bootstrap system
+- ?
+
 Cache system
 - Damien Tournoud 'DamZ' http://drupal.org/user/22211
 - Nathaniel Catchpole 'catch' http://drupal.org/user/35733
@@ -83,6 +92,9 @@ Entity system
 - Franz Heinzmann 'Frando' http://drupal.org/user/21850
 - Sascha Grossenbacher 'Berdir' http://drupal.org/user/214652
 
+Extension system
+- ?
+
 File system
 - Andrew Morton 'drewish' http://drupal.org/user/34869
 - Aaron Winborn 'aaron' http://drupal.org/user/33420
@@ -138,6 +150,9 @@ Render system
 - Alex Bronstein 'effulgentsia' http://drupal.org/user/78040
 - Franz Heinzmann 'Frando' http://drupal.org/user/21850
 
+Request processing system
+- ?
+
 Routing system
 - Larry Garfield 'Crell' http://drupal.org/user/26398