diff -Nru docbook-mathml-1.1CR1/debian/changelog docbook-mathml-1.1CR1/debian/changelog
--- docbook-mathml-1.1CR1/debian/changelog	2021-01-03 14:46:03.000000000 +0000
+++ docbook-mathml-1.1CR1/debian/changelog	2022-01-14 14:45:29.000000000 +0000
@@ -1,3 +1,14 @@
+docbook-mathml (1.1CR1-3) unstable; urgency=medium
+
+  * d/compat: Migrate to compat 11
+  * d/rules: Remove explicit --parallel flag from dh sequence
+  * d/control: Update Vcs URLs to new git location
+  * d/control: Bump Std-Vers to 4.6.0 no changes needed
+  * d/control: switch from w3-dtd-mathml to w3c-sgml-lib. Closes: #1001181
+  * d/watch: Update to version 4
+
+ -- Mathieu Malaterre <malat@debian.org>  Fri, 14 Jan 2022 15:45:29 +0100
+
 docbook-mathml (1.1CR1-2.1) unstable; urgency=medium
 
   * Non maintainer upload by the Reproducible Builds team.
diff -Nru docbook-mathml-1.1CR1/debian/compat docbook-mathml-1.1CR1/debian/compat
--- docbook-mathml-1.1CR1/debian/compat	2012-05-10 13:37:10.000000000 +0000
+++ docbook-mathml-1.1CR1/debian/compat	2022-01-14 14:41:17.000000000 +0000
@@ -1 +1 @@
-7
+11
diff -Nru docbook-mathml-1.1CR1/debian/control docbook-mathml-1.1CR1/debian/control
--- docbook-mathml-1.1CR1/debian/control	2012-05-11 15:22:41.000000000 +0000
+++ docbook-mathml-1.1CR1/debian/control	2022-01-14 14:43:51.000000000 +0000
@@ -3,15 +3,15 @@
 Priority: optional
 Maintainer: Debian XML/SGML Group <debian-xml-sgml-pkgs@lists.alioth.debian.org>
 Uploaders: Mathieu Malaterre <malat@debian.org>
-Build-Depends-Indep: debhelper (>= 7.0.50~), xml-core (>= 0.6)
-Standards-Version: 3.9.3
+Build-Depends-Indep: debhelper (>= 11), xml-core (>= 0.6)
+Standards-Version: 4.6.0
 Homepage: http://www.oasis-open.org/docbook/xml/mathml/
-Vcs-Browser: http://anonscm.debian.org/viewvc/debian-xml-sgml/packages/docbook-mathml/
-Vcs-Svn: svn://svn.debian.org/debian-xml-sgml/packages/docbook-mathml/trunk/
+Vcs-Git: https://salsa.debian.org/xml-sgml-team/docbook-mathml.git
+Vcs-Browser: https://salsa.debian.org/xml-sgml-team/docbook-mathml
 
 Package: docbook-mathml
 Architecture: all
-Depends: ${misc:Depends}, docbook-xml (>= 4.1.2-4), w3-dtd-mathml
+Depends: ${misc:Depends}, docbook-xml (>= 4.1.2-4), w3c-sgml-lib
 Suggests: docbook-xsl
 Description: Extension to DocBook XML for using MathML markup
  The DocBook MathML module adds support for including MathML 
diff -Nru docbook-mathml-1.1CR1/debian/rules docbook-mathml-1.1CR1/debian/rules
--- docbook-mathml-1.1CR1/debian/rules	2012-05-22 07:38:31.000000000 +0000
+++ docbook-mathml-1.1CR1/debian/rules	2022-01-14 14:41:54.000000000 +0000
@@ -1,7 +1,7 @@
 #!/usr/bin/make -f
 
 %:
-	dh $@ --parallel
+	dh $@
 
 override_dh_install:
 	dh_install
diff -Nru docbook-mathml-1.1CR1/debian/watch docbook-mathml-1.1CR1/debian/watch
--- docbook-mathml-1.1CR1/debian/watch	2012-05-10 13:34:35.000000000 +0000
+++ docbook-mathml-1.1CR1/debian/watch	2022-01-14 14:44:57.000000000 +0000
@@ -1,2 +1,2 @@
-version=3
-http://oasis-open.org/docbook/xml/mathml/index.1.shtml ../../xml/mathml/([\d\.]+)/index.shtml
+version=4
+https://oasis-open.org/docbook/xml/mathml/index.1.shtml ../../xml/mathml/([\d\.]+)/index.shtml