diff --git a/repack.sh b/repack.sh
index b4a0624..b44745d 100755
--- a/repack.sh
+++ b/repack.sh
@@ -2,7 +2,7 @@
 
 set -euxo pipefail
 
-version=2.1.9
+version=2.0.27
 prerel=
 
 src=waf-${version}${prerel}.tar.bz2
diff --git a/sources b/sources
index 49df050..1752977 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (waf-2.1.9.stripped.tar.bz2) = 51df87254b4826247c36f86ac8df4a2dcb47322dc6747a63f4f2fb78962136d52add1d6089a65d76ff89c800f52715c14991e71216f82419e0733a5914523e05
+SHA512 (waf-2.0.27.stripped.tar.bz2) = 836703d297775b6a936161877cd47bd2cda69e2a7cdf096ceef1b4bffaa5af9385d53c50e54fa9cd3f6e0be5ee2b13ad2d5bcdbf6488c7a2614b844a4879ace4
diff --git a/waf.spec b/waf.spec
index 6646d2a..caae4f9 100644
--- a/waf.spec
+++ b/waf.spec
@@ -1,10 +1,9 @@
 Name:           waf
-Version:        2.1.9
+Version:        2.0.27
 Release:        1%{?dist}
 Summary:        A Python-based build system
 # The entire source code is BSD apart from pproc.py (taken from Python 2.5)
-# Automatically converted from old format: BSD and Python - review is highly recommended.
-License:        LicenseRef-Callaway-BSD AND LicenseRef-Callaway-Python
+License:        BSD and Python
 URL:            https://waf.io/
 # Original tarfile can be found at
 # https://waf.io/waf-%%{version}.tar.bz2
@@ -138,42 +137,6 @@ rm -f docs/sphinx/build/html/.buildinfo
 
 
 %changelog
-* Sat Nov 15 2025 Thomas Moschny <thomas.moschny@gmx.de> - 2.1.9-1
-- Update to 2.1.9.
-
-* Fri Sep 19 2025 Python Maint <python-maint@redhat.com> - 2.1.6-4
-- Rebuilt for Python 3.14.0rc3 bytecode
-
-* Fri Aug 15 2025 Python Maint <python-maint@redhat.com> - 2.1.6-3
-- Rebuilt for Python 3.14.0rc2 bytecode
-
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 2.1.6-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Fri Jun 20 2025 Thomas Moschny <thomas.moschny@gmx.de> - 2.1.6-1
-- Update to 2.1.6.
-
-* Tue Jun 03 2025 Python Maint <python-maint@redhat.com> - 2.1.5-2
-- Rebuilt for Python 3.14
-
-* Sun Mar  9 2025 Thomas Moschny <thomas.moschny@gmx.de> - 2.1.5-1
-- Update to 2.1.5.
-
-* Sun Jan 19 2025 Fedora Release Engineering <releng@fedoraproject.org> - 2.1.2-2
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Sat Sep  7 2024 Thomas Moschny <thomas.moschny@gmx.de> - 2.1.2-1
-- Update to 2.1.2.
-
-* Wed Sep 04 2024 Miroslav Suchý <msuchy@redhat.com> - 2.0.27-4
-- convert license to SPDX
-
-* Sat Jul 20 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.27-3
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
-
-* Fri Jun 07 2024 Python Maint <python-maint@redhat.com> - 2.0.27-2
-- Rebuilt for Python 3.13
-
 * Thu Apr  4 2024 Thomas Moschny <thomas.moschny@gmx.de> - 2.0.27-1
 - Update to 2.0.27.