diff --git a/python-chardet.spec b/python-chardet.spec
index 399d7d6..d2dc5a9 100644
--- a/python-chardet.spec
+++ b/python-chardet.spec
@@ -1,6 +1,6 @@
 Name:           python-chardet
 Version:        4.0.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Character encoding auto-detection in Python
 License:        LGPLv2
 URL:            https://github.com/chardet/chardet
@@ -64,6 +64,11 @@ grep -lr "^#\!/usr/bin/env python" chardet/ | xargs sed -i "1d"
 
 
 %changelog
+* Tue Feb 08 2022 Tomas Orsava <torsava@redhat.com> - 4.0.0-4
+- Add automatically generated Obsoletes tag with the python39- prefix
+  for smoother upgrade from RHEL8
+- Related: rhbz#1990421
+
 * Tue Aug 10 2021 Mohan Boddu <mboddu@redhat.com> - 4.0.0-3
 - Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
   Related: rhbz#1991688