diff --git a/docbook-sgml/.SRCINFO b/docbook-sgml/.SRCINFO
new file mode 100644
index 0000000000..8c71ea58fc
--- /dev/null
+++ b/docbook-sgml/.SRCINFO
@@ -0,0 +1,15 @@
+pkgbase = docbook-sgml
+	pkgdesc = Document type definitions for verification of SGML data files against the DocBook rule set.
+	pkgver = 4.5
+	pkgrel = 9
+	url = https://www.docbook.org/sgml/
+	install = docbook-sgml.install
+	arch = any
+	license = LicenseRef-docbook-sgml
+	depends = sgml-common
+	source = https://www.docbook.org/sgml/4.5/docbook-4.5.zip
+	source = LICENSE
+	sha256sums = 8043e514e80c6c19cb146b5d37937d1305bf3abf9b0097c36df7f70f611cdf43
+	sha256sums = 4fe5a7c521db026ce926c148c051f495b0966e3c34443030116aa34381d6cec8
+
+pkgname = docbook-sgml
diff --git a/docbook-sgml/.nvchecker.toml b/docbook-sgml/.nvchecker.toml
new file mode 100644
index 0000000000..9b5877c7f4
--- /dev/null
+++ b/docbook-sgml/.nvchecker.toml
@@ -0,0 +1,10 @@
+[docbook-sgml]
+#source = "github"
+#github = "docbook/dsssl"
+#use_max_tag = true
+#ignore = "SVNSNAPSHOT"
+
+source = "regex"
+regex = "\\d+.\\d+"
+exclude_regex = "1999"
+url = "https://docbook.org/sgml/"
diff --git a/docbook-sgml/LICENSE b/docbook-sgml/LICENSE
new file mode 100644
index 0000000000..469b5e40d1
--- /dev/null
+++ b/docbook-sgml/LICENSE
@@ -0,0 +1,43 @@
+Copyright © The Organization for the Advancement of Structured Information 
+Standards [OASIS] 2001, 2002, 2003, 2004, 2005, 2006. All Rights Reserved.
+
+OASIS takes no position regarding the validity or scope of any intellectual 
+property or other rights that might be claimed to pertain to the implementation 
+or use of the technology described in this document or the extent to which any 
+license under such rights might or might not be available; neither does it 
+represent that it has made any effort to identify any such rights. Information 
+on OASIS's procedures with respect to rights in OASIS specifications can be 
+found at the OASIS website. Copies of claims of rights made available for 
+publication and any assurances of licenses to be made available, or the result 
+of an attempt made to obtain a general license or permission for the use of such 
+proprietary rights by implementors or users of this specification, can be 
+obtained from the OASIS Executive Director.
+
+OASIS invites any interested party to bring to its attention any copyrights, 
+patents or patent applications, or other proprietary rights which may cover 
+technology that may be required to implement this specification. Please address 
+the information to the OASIS Executive Director.
+
+This document and translations of it may be copied and furnished to others, and 
+derivative works that comment on or otherwise explain it or assist in its 
+implementation may be prepared, copied, published and distributed, in whole or 
+in part, without restriction of any kind, provided that the above copyright 
+notice and this paragraph are included on all such copies and derivative works. 
+However, this document itself may not be modified in any way, such as by 
+removing the copyright notice or references to OASIS, except as needed for the 
+purpose of developing OASIS specifications, in which case the procedures for 
+copyrights defined in the OASIS Intellectual Property Rights document must be 
+followed, or as required to translate it into languages other than English.
+
+The limited permissions granted above are perpetual and will not be revoked by 
+OASIS or its successors or assigns.
+
+This document and the information contained herein is provided on an "AS IS" 
+basis and OASIS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
+LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT INFRINGE 
+ANY RIGHTS OR ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A 
+PARTICULAR PURPOSE.
+
+OASIS has been notified of intellectual property rights claimed in regard to 
+some or all of the contents of this specification. For more information consult 
+the online list of claimed rights.
diff --git a/docbook-sgml/PKGBUILD b/docbook-sgml/PKGBUILD
index a87e069149..e71da3c662 100644
--- a/docbook-sgml/PKGBUILD
+++ b/docbook-sgml/PKGBUILD
@@ -5,15 +5,19 @@
 
 pkgname=docbook-sgml
 pkgver=4.5
-pkgrel=8
+pkgrel=9
 pkgdesc='Document type definitions for verification of SGML data files against the DocBook rule set.'
 arch=(any)
 url='https://www.docbook.org/sgml/'
-license=('MIT')
+# https://docbook.org/specs/docbook-4.5-spec
+# chapter "C. Notices"
+license=(LicenseRef-$pkgname)
 depends=('sgml-common')
 install='docbook-sgml.install'
-source=("https://www.docbook.org/sgml/${pkgver}/docbook-${pkgver}.zip")
-sha256sums=('8043e514e80c6c19cb146b5d37937d1305bf3abf9b0097c36df7f70f611cdf43')
+source=("https://www.docbook.org/sgml/${pkgver}/docbook-${pkgver}.zip"
+        LICENSE)
+sha256sums=('8043e514e80c6c19cb146b5d37937d1305bf3abf9b0097c36df7f70f611cdf43'
+            '4fe5a7c521db026ce926c148c051f495b0966e3c34443030116aa34381d6cec8')
 
 build() {
   cd "$srcdir"
@@ -49,4 +53,5 @@ package() {
   install -dm755 "$pkgdir/$DTDDIR"
   install -m644 docbook.cat "$pkgdir/$DTDDIR/catalog"
   install -m644 *.dtd *.mod *.dcl "$pkgdir/$DTDDIR"
+  install -D -m644 LICENSE -t "${pkgdir}/usr/share/licenses/${pkgname}/"
 }