diff --git a/SPECS/python-wheel.spec b/SPECS/python-wheel.spec
index c1cdd44..544b6a1 100644
--- a/SPECS/python-wheel.spec
+++ b/SPECS/python-wheel.spec
@@ -8,7 +8,7 @@
 
 Name:           python-%{pypi_name}
 Version:        0.33.6
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        Built-package format for Python
 
 License:        MIT
@@ -48,6 +48,8 @@ BuildRequires:  python%{python3_pkgversion}-pytest
 %endif
 %{?python_provide:%python_provide python%{python3_pkgversion}-%{pypi_name}}
 
+# Require alternatives version that implements the --keep-foreign flag
+Requires(postun): alternatives >= 1.19.1-1
 # python38 installs the alternatives master symlink to which we attach a slave
 Requires: python38
 Requires(post): python38
@@ -110,7 +112,7 @@ alternatives --add-slave python3 %{_bindir}/python%{python3_version} \
 %postun -n python%{python3_pkgversion}-%{pypi_name}
 # Do this only during uninstall process (not during update)
 if [ $1 -eq 0 ]; then
-    alternatives --remove-slave python3 %{_bindir}/python%{python3_version} \
+    alternatives --keep-foreign --remove-slave python3 %{_bindir}/python%{python3_version} \
         %{pypi_name}-3
 fi
 
@@ -131,6 +133,10 @@ fi
 %endif
 
 %changelog
+* Mon Aug 02 2021 Tomas Orsava <torsava@redhat.com> - 0.33.6-6
+- Adjusted the postun scriptlets to enable upgrading to RHEL 9
+- Resolves: rhbz#1933055
+
 * Mon Mar 09 2020 Tomas Orsava <torsava@redhat.com> - 0.33.6-5
 - Implement the alternatives system for the executables
 - Resolves: rhbz#1807041