diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 76d6e61e2be3c..8cd905d4b0564 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -10,7 +10,7 @@
 
 /.github @iluuu1994 @TimWolla
 /build/gen_stub.php @kocsismate
-/ext/bcmath @Girgias
+/ext/bcmath @Girgias @nielsdos
 /ext/curl @adoy
 /ext/date @derickr
 /ext/dba @Girgias
@@ -37,10 +37,13 @@
 /ext/pgsql @devnexen
 /ext/random @TimWolla @zeriyoshi
 /ext/session @Girgias
+/ext/simplexml @nielsdos
 /ext/sockets @devnexen
 /ext/spl @Girgias
 /ext/standard @bukka
+/ext/xml @nielsdos
 /ext/xmlreader @nielsdos
+/ext/xmlwriter @nielsdos
 /ext/xsl @nielsdos
 /main @bukka
 /sapi/fpm @bukka
diff --git a/EXTENSIONS b/EXTENSIONS
index b59ae91c9a8cc..9cf88c94e6c15 100644
--- a/EXTENSIONS
+++ b/EXTENSIONS
@@ -170,12 +170,14 @@ EXTENSION:           dom
 PRIMARY MAINTAINER:  Christian Stocker <chregu@php.net> (2003 - 2011)
                      Rob Richards <rrichards@php.net> (2003 - 2012)
                      Marcus Börger <helly@php.net> (2003 - 2006)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 SINCE:               5.0
 -------------------------------------------------------------------------------
 EXTENSION:           simplexml
 PRIMARY MAINTAINER:  Marcus Börger <helly@php.net> (2003 - 2008)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 SINCE:               5.0
@@ -188,30 +190,35 @@ STATUS:              Working
 EXTENSION:           xml
 PRIMARY MAINTAINER:  Thies C. Arntzen <thies@thieso.net> (1999 - 2002)
                      Rob Richards <rrichards@php.net> (2003 - 2013)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 -------------------------------------------------------------------------------
 EXTENSION:           libxml
 PRIMARY MAINTAINER:  Rob Richards <rrichards@php.net> (2003 - 2009)
                      Christian Stocker <chregu@php.net> (2004 - 2011)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 -------------------------------------------------------------------------------
 EXTENSION:           xmlreader
 PRIMARY MAINTAINER:  Rob Richards <rrichards@php.net> (2004 - 2010)
                      Christian Stocker <chregu@php.net> (2004 - 2004)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 -------------------------------------------------------------------------------
 EXTENSION:           xmlwriter
 PRIMARY MAINTAINER:  Rob Richards <rrichards@php.net> (2004 - 2010)
                      Pierre-Alain Joye <pajoye@php.net> (2005-2009)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 -------------------------------------------------------------------------------
 EXTENSION:           xsl
 PRIMARY MAINTAINER:  Christian Stocker <chregu@php.net> (2003 - 2011)
                      Rob Richards <rrichards@php.net> (2003 - 2010)
+                     Niels Dossche <nielsdos@php.net> (2023 - 2024)
 MAINTENANCE:         Maintained
 STATUS:              Working
 SINCE:               5.0