diff --git a/.gitignore b/.gitignore
index a6dcb05..e6a1878 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
 /COPASI-Build-150.tar.gz
 /COPASI-Build-155.tar.gz
 /COPASI-Build-156.tar.gz
+/COPASI-Build-158.tar.gz
diff --git a/COPASI.spec b/COPASI.spec
index 2f4dfac..da66474 100644
--- a/COPASI.spec
+++ b/COPASI.spec
@@ -1,7 +1,4 @@
-# /usr/lib/rpm/debugedit: canonicalization unexpectedly shrank by one character
-%global debug_package %{nil}
-
-%global  buildid    156
+%global  buildid    158
 
 %global with_python2 1
 %global with_python3 1
@@ -41,8 +38,8 @@
 
 Name:  COPASI
 Summary: Biochemical network simulator
-Version: 4.19.%{buildid}
-Release: 2%{?dist}
+Version: 4.20.%{buildid}
+Release: 1%{?dist}
 
 ##Artistic 2.0 is main license
 ##GPLv2+ is related to a Mixed Source Licensing Scenario
@@ -534,6 +531,10 @@ appstream-util validate-relax --nonet $RPM_BUILD_ROOT%{_datadir}/appdata/*.appda
 %{_datadir}/copasi/doc/
 
 %changelog
+* Mon Jul 31 2017 Antonio Trande <sagitterATfedoraproject.org> - 4.20.158-1
+- Update to version 4.20 -build 158
+- Debuginfo packages built
+
 * Wed Jul 26 2017 Fedora Release Engineering <releng@fedoraproject.org> - 4.19.156-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
 
diff --git a/sources b/sources
index 5f5c26f..2a064d7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (COPASI-Build-156.tar.gz) = 8e4edaeb269e04964210227db90473b094d3a482da27ce76703766170d552021a6646525862381b25080680702b493a934963d6631d3470cbfbc5c0b9966574d
+SHA512 (COPASI-Build-158.tar.gz) = 40a346958aaa56153ab2a4080135ec7108673c16e436601555b7bfbd380c8ee6a507f9ad4e1fb07720df7737b455176b198ac65bc1c05130884144b17185f62c