diff --git a/python-sphinxcontrib-qthelp.spec b/python-sphinxcontrib-qthelp.spec
index 6cc96fb..3f7e6ed 100644
--- a/python-sphinxcontrib-qthelp.spec
+++ b/python-sphinxcontrib-qthelp.spec
@@ -1,6 +1,6 @@
 Name:          python-sphinxcontrib-qthelp
 Version:       1.0.3
-Release:       1mamba
+Release:       2mamba
 Summary:       A sphinx extension which outputs QtHelp document
 Group:         System/Libraries
 Vendor:        openmamba
@@ -11,8 +11,8 @@ Source:        https://pypi.debian.net/sphinxcontrib-qthelp/sphinxcontrib-qthelp
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
-BuildRequires: libpython36-devel
-Requires:      python36 >= %python_version
+BuildRequires: libpython3-devel
+Requires:      python3 >= %python_version
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -26,15 +26,15 @@ BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 %setup -q -n sphinxcontrib-qthelp-%{version}
 
 %build
-CFLAGS="%{optflags}" %{__python36} setup.py build
+CFLAGS="%{optflags}" %{__python3} setup.py build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%{__python36} setup.py install \
+%{__python} setup.py install \
    -O1 --skip-build \
    --root="%{buildroot}" \
-   --install-headers=%{python36_inc} \
-   --install-lib=%{python36_sitearch} \
+   --install-headers=%{python_inc} \
+   --install-lib=%{python_sitearch} \
    --record=%{name}.filelist
 
 sed -i "s,.*/man/.*,&.gz," %{name}.filelist
@@ -44,6 +44,9 @@ sed -i "s,.*/man/.*,&.gz," %{name}.filelist
 %doc LICENSE
 
 %changelog
+* Sat Nov 28 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.3-2mamba
+- fix multiple python versions build
+
 * Sun Mar 01 2020 Automatic Build System <autodist@mambasoft.it> 1.0.3-1mamba
 - automatic version update by autodist