diff --git a/rubygem-ruby-progressbar.spec b/rubygem-ruby-progressbar.spec
index 378fe06..53d1851 100644
--- a/rubygem-ruby-progressbar.spec
+++ b/rubygem-ruby-progressbar.spec
@@ -1,7 +1,7 @@
 %global gem_name ruby-progressbar
 
 Name:           rubygem-%{gem_name}
-Version:        1.13.0
+Version:        1.12.0
 Release:        1%{?dist}
 Summary:        Ruby/ProgressBar is a flexible text progress bar library
 License:        MIT
@@ -70,9 +70,6 @@ export RUBYLIB=$(pwd)/lib
 # Need investigation
 sed -i spec/lib/ruby-progressbar/base_spec.rb \
 	-e '\@can be converted into a hash@s|it|xit|'
-# ???
-sed -i spec/lib/ruby-progressbar/projector/smoothed_average_spec.rb \
-	-e 's|\.to be \([0-9][0-9]*\.[0-9][0-9]*\)|.to eq(\1)|'
 
 ruby -rruby-progressbar -rtimecop -S rspec spec
 popd
@@ -92,9 +89,6 @@ popd
 
 
 %changelog
-* Sun Mar  5 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.13.0-1
-- 1.13.0
-
 * Fri Mar  3 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.12.0-1
 - 1.12.0
 
diff --git a/sources b/sources
index c413552..ae4cac9 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (ruby-progressbar-1.13.0.gem) = 4e651cfa75dfed3467017583886d0e0eedb46c13c7f8faa67fae06f169983fbf6a4525799cb45411b9c9c9f536786a66ba71764e760261c0e02ff7487bf4c464
-SHA512 (rubygem-ruby-progressbar-1.13.0-testsuite.tar.gz) = d96bed3c7844fc7b5d5d579c88051048d3135f73d8a0298e56e3d943c80ba0d1cb4e1ec598d17c8456eaeb9bad73397e8c8ad61d37556d9f7a4ed7a454e85de7
+SHA512 (ruby-progressbar-1.12.0.gem) = ef650167b3c0a48ffa29b47f55fffa66220e5b2f42d86c0647f776afbcb518a009e88e9da3134eaa91c7fbc90ab794f2d23ac640c650953101bd7cdd65c45eb0
+SHA512 (rubygem-ruby-progressbar-1.12.0-testsuite.tar.gz) = 6804ab0bca65c8f90067e6740db5e60f8ac8773127368c854861b2be021e05e4d9e9b8a9a4a9159c8a02f015ed7943b1bcb9dffad3522d3c87a6ce713a64fa0e