diff --git a/djvulibre.spec b/djvulibre.spec
index 6e83e49..8f16138 100644
--- a/djvulibre.spec
+++ b/djvulibre.spec
@@ -1,7 +1,7 @@
 %define libname libdjvulibre
 %define majver3 %(echo %version | cut -d. -f1-3)
 Name:          djvulibre
-Version:       3.5.27
+Version:       3.5.28
 Release:       1mamba
 Summary:       Web-centric format and software platform for distributing documents and images
 Group:         Applications/Publishing
@@ -49,7 +49,9 @@ Requires:      %{libname} = %{?epoch:%epoch:}%{version}-%{release}
 
 %description -n %{libname}-devel
 DjVu is a web-centric format and software platform for distributing documents and images.
-This package contains static libraries and header files need for development.
+This package contains static libraries and header files needed for development.
+
+%debug_package
 
 %prep
 %setup -q -n %{name}-%{majver3}
@@ -71,10 +73,13 @@ This package contains static libraries and header files need for development.
 %files
 %defattr(-,root,root)
 %{_bindir}/*
-%{_datadir}/djvu
-%{_datadir}/icons/hicolor/*/mimetypes/djvu.png
-%{_datadir}/icons/hicolor/scalable/mimetypes/djvu.svgz
-%{_datadir}/mime/packages/djvulibre-mime.xml
+%dir %{_datadir}/djvu
+%dir %{_datadir}/djvu/osi
+%{_datadir}/djvu/osi/*
+%dir %{_datadir}/djvu/pubtext
+%{_datadir}/djvu/pubtext/*
+%{_datadir}/icons/hicolor/*/mimetypes/image-vnd.djvu.png
+%{_datadir}/icons/hicolor/scalable/mimetypes/image-vnd.djvu.svgz
 %{_mandir}/man1/*
 
 %files -n %{libname}
@@ -84,14 +89,17 @@ This package contains static libraries and header files need for development.
 
 %files -n %{libname}-devel
 %defattr(-,root,root)
-%{_includedir}/libdjvu/ddjvuapi.h
-%{_includedir}/libdjvu/miniexp.h
+%dir %{_includedir}/libdjvu
+%{_includedir}/libdjvu/*.h
 %{_libdir}/libdjvulibre.la
 %{_libdir}/libdjvulibre.so
 %{_libdir}/pkgconfig/ddjvuapi.pc
 %doc NEWS README
 
 %changelog
+* Fri Jan 15 2021 Automatic Build System <autodist@mambasoft.it> 3.5.28-1mamba
+- automatic version update by autodist
+
 * Sun Feb 22 2015 Automatic Build System <autodist@mambasoft.it> 3.5.27-1mamba
 - automatic version update by autodist