diff --git a/ocaml-labltk.spec b/ocaml-labltk.spec
index 8b1571d..c1294ad 100644
--- a/ocaml-labltk.spec
+++ b/ocaml-labltk.spec
@@ -1,5 +1,5 @@
 Name:          ocaml-labltk
-Version:       8.06.5
+Version:       8.06.7
 Release:       1mamba
 Summary:       An OCaml interface to the Tcl/Tk GUI framework
 Group:         System/Libraries
@@ -7,14 +7,16 @@ Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://labltk.forge.ocamlcore.org/
-Source:        https://forge.ocamlcore.org/frs/download.php/1764/labltk-%{version}.tar.gz
+Source:        https://github.com/garrigue/labltk.git/%{version}/labltk-%{version}.tar.bz2
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
-BuildRequires: libX11-devel
+BuildRequires: ldconfig
 BuildRequires: libtcl-devel
 BuildRequires: libtk-devel
+BuildRequires: ocaml-runtime
 ## AUTOBUILDREQ-END
+BuildRequires: ocaml >= 4.09.0
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -34,7 +36,8 @@ This package contains libraries and header files for developing applications tha
 %setup -q -n labltk-%{version}
 
 %build
-./configure
+./configure \
+   -tkdefs "-fPIC"
 
 make all opt
 
@@ -66,6 +69,7 @@ rm -f %{buildroot}%{_libdir}/ocaml/labltk/*.ml
 %{_bindir}/labltk
 %dir %{_libdir}/ocaml/labltk
 %{_libdir}/ocaml/labltk/*.cmi
+%{_libdir}/ocaml/labltk/*.cma
 %{_libdir}/ocaml/labltk/tkthread.cmo
 %{_libdir}/ocaml/stublibs/dlllabltk.so
 
@@ -73,7 +77,6 @@ rm -f %{buildroot}%{_libdir}/ocaml/labltk/*.ml
 %defattr(-,root,root)
 %{_bindir}/ocamlbrowser
 %{_libdir}/ocaml/labltk/*.a
-%{_libdir}/ocaml/labltk/*.cma
 %{_libdir}/ocaml/labltk/*.cmx
 %{_libdir}/ocaml/labltk/*.cmxa
 %{_libdir}/ocaml/labltk/*.mli
@@ -83,5 +86,8 @@ rm -f %{buildroot}%{_libdir}/ocaml/labltk/*.ml
 %doc README.md README.mlTk
 
 %changelog
+* Sat Jan 04 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 8.06.7-1mamba
+- update to 8.06.7
+
 * Fri Apr 26 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 8.06.5-1mamba
 - package created using the webbuild interface