diff --git a/ocaml-faad.spec b/ocaml-faad.spec
index 73e85e9..272998c 100644
--- a/ocaml-faad.spec
+++ b/ocaml-faad.spec
@@ -1,18 +1,22 @@
 %define ocamlpck  faad
 
 Name:          ocaml-faad
-Version:       0.3.2
+Version:       0.4.0
 Release:       1mamba
 Summary:       OCaml bindings for the libfaad AAC decoder library
 Group:         Development/Bindings
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Davide Madrisan <davide.madrisan@gmail.com>
-URL:           http://savonet.sourceforge.net/
-Source:        http://sourceforge.net/projects/savonet/files/ocaml-faad/%{version}/ocaml-faad-%{version}.tar.gz
+URL:           https://savonet.sourceforge.net/
+Source:        https://github.com/savonet/ocaml-faad.git/%{version}/ocaml-faad-%{version}.tar.bz2
+#Source:        http://sourceforge.net/projects/savonet/files/ocaml-faad/%{version}/ocaml-faad-%{version}.tar.gz
 License:       GPL
 ## AUTOBUILDREQ-BEGIN
-## note: run 'autospec -u -a6 ocaml-faad' to get the list of build requirements.
+BuildRequires: glibc-devel
+BuildRequires: ldconfig
+BuildRequires: libfaad2-devel
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
 BuildRequires: ocaml
 BuildRequires: ocaml-findlib
@@ -30,8 +34,11 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 %description devel
 This package contains libraries and signature files for developing applications that use %{name}.
 
+%debug_package
+
 %prep
 %setup -q
+./bootstrap
 
 %build
 ./configure \
@@ -74,5 +81,8 @@ make install
 %doc doc/html/
 
 %changelog
+* Fri Feb 19 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 0.4.0-1mamba
+- update to 0.5.0
+
 * Wed Jun 26 2013 Davide Madrisan <davide.madrisan@gmail.com> 0.3.2-1mamba
 - package created by autospec