diff --git a/hplip.spec b/hplip.spec
index 815ea4b..70b01e2 100644
--- a/hplip.spec
+++ b/hplip.spec
@@ -3,7 +3,7 @@
 %define cups_ver %(cups-config --api-version)
 Name:          hplip
 Version:       3.20.3
-Release:       1mamba
+Release:       2mamba
 Summary:       A printer driver for HP inkjet devices
 Group:         System/Spooling
 Vendor:        openmamba
@@ -94,6 +94,16 @@ sed -i "s|chmod 774|/bin/true 774|" Makefile.in
 
 sh %{SOURCE1} --target hplip-%{version}-plugin --noexec
 
+#replace shebang lines to python3 interpreter (from hplip-install)
+PAT1="#!\/usr\/bin\/(env )?python$"
+PAT2="#!\/usr\/bin\/env python3\.6"
+for pyfile in `find . -maxdepth 1 -name "*.py"`; do
+   sed -i -r "0,/$PAT1/s//$PAT2/" $pyfile
+done
+for pyfile in `find . -type f \( -iname hpps -o -iname hpfax.py -o -iname pstotiff \)`; do
+   sed -i -r "0,/$PAT1/s//$PAT2/" $pyfile
+done
+
 export AUTOMAKE='automake --foreign'
 autoreconf -f -i
 
@@ -299,6 +309,9 @@ fi
 %{_localstatedir}/lib/hp/hplip.state
 
 %changelog
+* Wed May 13 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 3.20.3-2mamba
+- replace shebang to work with python36
+
 * Fri Mar 13 2020 Automatic Build System <autodist@mambasoft.it> 3.20.3-1mamba
 - automatic version update by autodist
 
@@ -556,7 +569,7 @@ fi
 * Tue Jun 20 2006 Stefano Cotta Ramusino <stefano.cotta@qilinux.it> 1.6.6-1qilnx
 - update to version 1.6.6 by autospec
 
-* Sun Jan 07 2006 Silvan Calarco <silvan.calarco@mambasoft.it> 0.9.7-1qilnx
+* Sat Jan 07 2006 Silvan Calarco <silvan.calarco@mambasoft.it> 0.9.7-1qilnx
 - renamed from hpijs to hplip
 - foomatic files install remove (already provided by foomatic)