diff --git a/docbook_4.changes b/docbook_4.changes
index 86df424..278ab37 100644
--- a/docbook_4.changes
+++ b/docbook_4.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Mar 29 11:01:56 CEST 2007 - toms@suse.de
+
+- Added unzip as build requirements
+
 -------------------------------------------------------------------
 Fri Feb 16 14:15:29 CET 2007 - toms@suse.de
 
diff --git a/docbook_4.spec b/docbook_4.spec
index 2b5a769..d545d4d 100644
--- a/docbook_4.spec
+++ b/docbook_4.spec
@@ -17,14 +17,14 @@ Group:          Productivity/Publishing/DocBook
 Provides:       docbk_4 docbook docbook-dtd
 Obsoletes:      docbk_4
 Requires:       iso_ent xmlcharent
-Requires:       sgml-skel libxml2
+Requires:       sgml-skel libxml2 unzip
 %define regcat /usr/bin/sgml-register-catalog
 PreReq:         %{regcat} /usr/bin/xmlcatalog sgml-skel
-PreReq:         sed grep awk
+PreReq:         sed grep awk unzip
 Autoreqprov:    on
 Summary:        DocBook DTD Version 4.x
 Version:        4.5
-Release:        2
+Release:        7
 Source2:        docbook_4-README.SuSE
 Source7:        CATALOG.docbook_4
 # DocBook 4.1
@@ -414,6 +414,8 @@ rm -fr $RPM_BUILD_ROOT
 %dir %{xml_docbook_xsd_dir}
 
 %changelog
+* Thu Mar 29 2007 - toms@suse.de
+- Added unzip as build requirements
 * Fri Feb 16 2007 - toms@suse.de
 - Added RELAX NG and W3C schema for 4.5
 - Completed DocBook 4.2 with RELAX NG and W3C