diff --git a/spectacle.spec b/spectacle.spec
index db13fe6..b64d514 100644
--- a/spectacle.spec
+++ b/spectacle.spec
@@ -1,8 +1,8 @@
 Name:          spectacle
-Version:       17.08.3
+Version:       17.12.0
 Release:       1mamba
 Summary:       Screenshot Capture Utility
-Group:         Graphical Desktop/Application
+Group:         Graphical Desktop/Applications/Utilities
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Davide Madrisan <davide.madrisan@gmail.com>
@@ -10,11 +10,39 @@ URL:           http://www.kde.org
 Source:        https://download.kde.org/stable/applications/%{version}/src/spectacle-%{version}.tar.xz
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
-## note: run 'autospec -u -a6 spectacle' to get the list of build requirements.
+BuildRequires: glibc-devel
+BuildRequires: libgcc
+BuildRequires: libkauth-devel
+BuildRequires: libkcodecs-devel
+BuildRequires: libkcompletion-devel
+BuildRequires: libkconfig-devel
+BuildRequires: libkconfigwidgets-devel
+BuildRequires: libkcoreaddons-devel
+BuildRequires: libkdbusaddons-devel
+BuildRequires: libkdeclarative-devel
+BuildRequires: libki18n-devel
+BuildRequires: libkio-devel
+BuildRequires: libkipi5-devel
+BuildRequires: libkjobwidgets-devel
+BuildRequires: libknotifications-devel
+BuildRequires: libkpackage-devel
+BuildRequires: libkservice-devel
+BuildRequires: libkwidgetsaddons-devel
+BuildRequires: libkwindowsystem-devel
+BuildRequires: libkxmlgui-devel
+BuildRequires: libpurpose-devel
+BuildRequires: libqt5-devel
+BuildRequires: libstdc++6-devel
+BuildRequires: libxcb-devel
+BuildRequires: libxcb-image-devel
+BuildRequires: libxcb-util-cursor-devel
+BuildRequires: libxcb-util-devel
 ## AUTOBUILDREQ-END
 BuildRequires: cmake
 BuildRequires: rpm-macros-kde5
 BuildRequires: extra-cmake-modules
+Provides:      ksnapshot
+Obsoletes:     ksnapshot
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -53,5 +81,10 @@ Spectacle is a screenshot capture utility for the KDE Plasma desktop.
 %doc COPYING COPYING.DOC COPYING.LIB
 
 %changelog
+* Sat Dec 23 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 17.12.0-1mamba
+- update to 17.12.0
+- fix package group
+- provide/obsolete ksnapshot
+
 * Sat Nov 11 2017 Davide Madrisan <davide.madrisan@gmail.com> 17.08.3-1mamba
 - package created using the webbuild interface