diff --git a/rubygem-racc.spec b/rubygem-racc.spec
index d88a58c..31638d7 100644
--- a/rubygem-racc.spec
+++ b/rubygem-racc.spec
@@ -1,12 +1,11 @@
 %global	gem_name	racc
 
 Name:		rubygem-%{gem_name}
-Version:	1.8.1
-Release:	104%{?dist}
+Version:	1.6.2
+Release:	200%{?dist}
 
 Summary:	LALR(1) parser generator
-# SPDX confirmed
-License:	BSD-2-Clause
+License:	BSD
 URL:		https://github.com/tenderlove/racc
 
 Source0:	https://rubygems.org/gems/%{gem_name}-%{version}.gem
@@ -18,7 +17,7 @@ BuildRequires:	gcc
 BuildRequires:	rubygems-devel
 BuildRequires:	ruby-devel
 BuildRequires:	rubygem(test-unit)
-BuildRequires:	rubygem(test-unit-ruby-core)
+
 
 %description
 Racc is a LALR(1) parser generator.
@@ -41,6 +40,21 @@ mv ../%{gem_name}-%{version}.gemspec .
 # Fix shebang
 grep -rl /usr/local . | xargs -r sed -i -e 's|/usr/local|/usr|'
 
+# Encoding
+pushd %{gem_name}-%{version}
+for f in \
+	sample/calc-ja.y \
+	#web/racc.ja.rhtml \
+	%{nil}
+do
+	touch -r $f $f.stamp
+	iconv -f EUC-JP -t UTF-8 $f > $f.tmp
+	mv $f.tmp $f
+	touch -r $f.stamp $f
+	rm -f $f.stamp
+done
+popd
+
 %build
 gem build %{gem_name}-%{version}.gemspec
 %gem_install
@@ -79,7 +93,11 @@ cp -a %{gem_name}-%{version}/* .%{gem_instdir}
 pushd .%{gem_instdir}
 
 LANG=C.utf8
-export RUBYLIB=$(pwd)/lib:$(pwd)/test:$(pwd)/test/lib
+# Kill "assert_output_unchanged" test for now
+# Output from racc between 1.4.14 and 1.4.15 differ
+true sed -i.match test/test_racc_command.rb \
+	-e '\@assert_output_unchanged@d'
+
 ruby -Ilib:test:test/lib:. -e \
 	"gem 'test-unit' ; require 'helper' ; Dir.glob('test/test_*.rb').each {|f| require f}"
 popd
@@ -87,7 +105,6 @@ popd
 %files
 %dir	%{gem_instdir}
 
-%license	%{gem_instdir}/BSDL
 %license	%{gem_instdir}/COPYING
 %doc	%lang(ja)	%{gem_instdir}/README.ja.rdoc
 %doc	%{gem_instdir}/README.rdoc
@@ -108,51 +125,6 @@ popd
 %doc	%{gem_instdir}/sample
 
 %changelog
-* Thu Jan 08 2026 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.8.1-104
-- Rebuild for https://fedoraproject.org/wiki/Changes/Ruby_4.0
-
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.8.1-103
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Sat Jan 18 2025 Fedora Release Engineering <releng@fedoraproject.org> - 1.8.1-102
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Tue Jan 07 2025 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.8.1-101
-- Rebuild for https://fedoraproject.org/wiki/Changes/Ruby_3.4
-
-* Wed Jul 31 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.8.1-100
-- 1.8.1
-
-* Fri Jul 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.8.0-101
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
-
-* Tue May 21 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.8.0-100
-- 1.8.0
-
-* Fri Jan 26 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.3-202
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
-
-* Wed Jan 03 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.7.3-201
-- Rebuild for https://fedoraproject.org/wiki/Changes/Ruby_3.3
-
-* Sun Nov 12 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.7.3-200
-- 1.7.3
-
-* Fri Jul 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.7.1-201
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
-
-* Tue Jul 18 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.7.1-200
-- 1.7.1
-
-* Thu Jun  8 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.7.0-200
-- 1.7.0
-
-* Fri Jan 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 1.6.2-202
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild
-
-* Tue Jan 03 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.6.2-201
-- Rebuild for https://fedoraproject.org/wiki/Changes/Ruby_3.2
-
 * Fri Dec 23 2022 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.6.2-200
 - 1.6.2
 
diff --git a/sources b/sources
index 6b9b68d..58dd17c 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (racc-1.8.1.gem) = 209b91d9c3c5abfcc16da438d2777466c2112b95e2319a6cdcfc9e74577180d02ee4ab3f7dcb2e196ace05487a0d6bfb6531973dcd453e068a97ada2ab832e0f
-SHA512 (rubygem-racc-1.8.1-missing-files.tar.gz) = ba76e15f608813c195c662ee2a0306fca71363ef1b173cc04c75f61d13cafe82f8aaf22590ec407952d21a23e8633827b0e52792bc41e28953d1e343cae1826b
+SHA512 (racc-1.6.2.gem) = eaec82655069584be5d4a4e5bcd35c6af27e4512605cb2dcab30586eab6fa3601f29d3a910241febfa42d46bd1c4d67b209a2b6928b5907abbbdb5ff52ce87d4
+SHA512 (rubygem-racc-1.6.2-missing-files.tar.gz) = fb1a0d492b82e011ea9506559b707bc78b39f2c05dab376a7cea30638737077653935e0121576612c2a69e30d5170e5965998b47adf7432c3efb84f5e843f92f