diff --git a/python-zope.interface.changes b/python-zope.interface.changes
index c8e30dc..7321f70 100644
--- a/python-zope.interface.changes
+++ b/python-zope.interface.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Aug  1 08:37:20 UTC 2013 - hpj@urpla.net
+
+- add unzip to BuildRequires
+
 -------------------------------------------------------------------
 Thu Aug  1 07:19:44 UTC 2013 - speilicke@suse.com
 
diff --git a/python-zope.interface.spec b/python-zope.interface.spec
index 838d6e5..1f495ad 100644
--- a/python-zope.interface.spec
+++ b/python-zope.interface.spec
@@ -28,6 +28,7 @@ BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  fdupes
 BuildRequires:  python-devel
 BuildRequires:  python-setuptools
+BuildRequires:  unzip
 # Documentation requirements:
 BuildRequires:  python-Sphinx
 BuildRequires:  python-repoze.sphinx.autointerface