diff --git a/devhelp.spec b/devhelp.spec
index 85de54e..418a5d4 100644
--- a/devhelp.spec
+++ b/devhelp.spec
@@ -1,4 +1,5 @@
 Name:              devhelp
+Epoch:             1
 Version:           3.30.1
 Release:           2 
 Summary:           GTK API documentation browser
@@ -10,14 +11,15 @@ Source0:           https://download.gnome.org/sources/%{name}/3.30/%{name}-%{ver
 BuildRequires:     chrpath desktop-file-utils gettext gobject-introspection-devel gtk-doc itstool meson
 BuildRequires:     pkgconfig(amtk-5) pkgconfig(gsettings-desktop-schemas) pkgconfig(gtk+-3.0) pkgconfig(webkit2gtk-4.0)
 BuildRequires:     libappstream-glib
+Provides:          %{name}-libs = %{version}-%{release}
+Obsoletes          %{name}-libs <= %{version}-%{release}
 
 %description
 A browser to show API documentation generated by gtk-doc.
 
 %package devel 
-Summary: include development library when using devhelp 
-Requires: %{name}%{?_isa} = %{version}-%{release}
-
+Summary:           Include development library when using devhelp 
+Requires:          %{name}%{?_isa} = %{version}-%{release}
 %description devel
 Development packages contains header files and library that can be used
 for embedding devhelp into other applications.
@@ -53,17 +55,16 @@ rm -rf ${RPM_BUILD_ROOT}%{_libdir}/gedit/plugins/__pycache__
 %{_datadir}/icons/hicolor/*/apps/org.gnome.Devhelp.png
 %{_datadir}/icons/hicolor/symbolic/apps/org.gnome.Devhelp-symbolic.svg
 %{_datadir}/metainfo/org.gnome.Devhelp.appdata.xml
-%{_datadir}/devhelp
 %dir %{_libdir}/gedit
 %dir %{_libdir}/gedit/plugins
 
 %files devel
+%{_includedir}/devhelp-3/
 %{_libdir}/libdevhelp-3.so.6*
 %{_libdir}/girepository-1.0/Devhelp-3.0.typelib
-%{_datadir}/glib-2.0/schemas/org.gnome.libdevhelp-3.gschema.xml
-%{_includedir}/devhelp-3/
 %{_libdir}/libdevhelp-3.so
 %{_libdir}/pkgconfig/*
+%{_datadir}/glib-2.0/schemas/org.gnome.libdevhelp-3.gschema.xml
 %{_datadir}/gir-1.0/Devhelp-3.0.gir
 
 %files help 
@@ -72,5 +73,5 @@ rm -rf ${RPM_BUILD_ROOT}%{_libdir}/gedit/plugins/__pycache__
 
 
 %changelog
-* Sun Dec 1 2019  jiaxiya <jiaxiyajiaxiya@168.com> - 3.30.1-2
+* Sun Dec 1 2019  jiaxiya <jiaxiyajiaxiya@168.com> - 1:3.30.1-2
 - Package init