diff --git a/bleachbit.spec b/bleachbit.spec
index ec32854..efcc108 100644
--- a/bleachbit.spec
+++ b/bleachbit.spec
@@ -1,7 +1,7 @@
 %define        bonus_version  0.8.2
 
 Name:          bleachbit
-Version:       3.2.0
+Version:       4.0.0
 Release:       1mamba
 Summary:       A cleaning tool to free disk space and to maintain privacy
 Group:         Graphical Desktop/Applications/Utilities
@@ -15,11 +15,11 @@ Source1:       http://sourceforge.net/projects/bleachbit/files/bleachbit/bleachb
 Source2:       bleachbit-root.desktop
 Source3:       bleachbit-root.png
 License:       GPL
-Requires:      python >= %python_version
 ## AUTOBUILDREQ-BEGIN
 ## AUTOBUILDREQ-END
-BuildRequires: python
+BuildRequires: python3
 BuildRequires: desktop-file-utils
+Requires:      python3 >= %python3_version
 BuildArch:     noarch
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -35,7 +35,7 @@ This package includes also the BleachBit Bonus.
 
 %build
 make -C po local
-%{__python} setup.py build
+%{__python3} setup.py build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -70,6 +70,9 @@ rm -f %{buildroot}%{_datadir}/bleachbit/Windows.py*
 %doc COPYING
 
 %changelog
+* Tue Apr 21 2020 Automatic Build System <autodist@mambasoft.it> 4.0.0-1mamba
+- automatic version update by autodist
+
 * Sun Feb 09 2020 Automatic Build System <autodist@mambasoft.it> 3.2.0-1mamba
 - automatic version update by autodist