diff --git a/gtk-doc.spec b/gtk-doc.spec
index 854b83d..a1bfd07 100644
--- a/gtk-doc.spec
+++ b/gtk-doc.spec
@@ -1,6 +1,6 @@
 %define majver %(echo %version | cut -d. -f1-2)
 Name:          gtk-doc
-Version:       1.33.0
+Version:       1.33.1
 Release:       1mamba
 Summary:       API documentation generation tool for GTK+ and GNOME
 Group:         Graphical Desktop/Applications/Development
@@ -8,7 +8,7 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://www.gtk.org
-Source:        ftp://ftp.gnome.org/pub/gnome/sources/gtk-doc/%{majver}/gtk-doc-%{version}.tar.xz
+Source:        https://ftp.gnome.org/pub/gnome/sources/gtk-doc/%{majver}/gtk-doc-%{version}.tar.xz
 Patch0:        gtk-doc-1.15-fixxref-vim-7.3.patch
 Patch1:        gtk-doc-1.30-fix-perms-style-css.patch
 License:       GPL
@@ -25,6 +25,7 @@ BuildRequires: dblatex
 %if "%{stage1}" != "1"
 BuildRequires: gnome-doc-utils
 %endif
+BuildRequires: itstool
 BuildRequires: python-pygments-py3
 BuildRequires: perl-devel >= 5.24
 Requires:      perl >= 5.24
@@ -67,12 +68,15 @@ It is used for generating the documentation for GTK+, GLib and GNOME.
 %{_datadir}/help/*/gtk-doc-manual/index.docbook
 %endif
 %{_datadir}/pkgconfig/gtk-doc.pc
-%dir %{_datadir}/cmake/GtkDoc
-%{_datadir}/cmake/GtkDoc/GtkDoc*.cmake
+%dir %{_libdir}/cmake/GtkDoc
+%{_libdir}/cmake/GtkDoc/GtkDoc*.cmake
 %doc AUTHORS COPYING
 #ChangeLog NEWS README TODO
 
 %changelog
+* Sat Nov 28 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.33.1-1mamba
+- update to 1.33.1
+
 * Thu Oct 22 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.33.0-1mamba
 - update to 1.33.0