diff --git a/rubygem-asciidoctor.spec b/rubygem-asciidoctor.spec
index 7cff70d..899d317 100644
--- a/rubygem-asciidoctor.spec
+++ b/rubygem-asciidoctor.spec
@@ -6,7 +6,7 @@
 
 Summary: A fast, open source AsciiDoc implementation in Ruby
 Name: rubygem-%{gem_name}
-Version: 2.0.26
+Version: 2.0.20
 Release: 1%{?dist}
 License: MIT
 URL: https://asciidoctor.org
@@ -23,7 +23,6 @@ BuildRequires: rubygem(coderay)
 BuildRequires: rubygem(concurrent-ruby)
 BuildRequires: rubygem(erubi)
 BuildRequires: rubygem(haml)
-BuildRequires: rubygem(logger)
 BuildRequires: rubygem(minitest)
 BuildRequires: rubygem(nokogiri)
 BuildRequires: rubygem(rouge)
@@ -37,7 +36,7 @@ Provides: rubygem(%{gem_name}) = %{version}
 %endif
 
 %if %{?pre:1}
-%global gem_instdir() %{gem_dir}/gems/%{gem_name}-%{version}%{pre}
+%global gem_instdir %{gem_dir}/gems/%{gem_name}-%{version}%{pre}
 %global gem_cache   %{gem_dir}/cache/%{gem_name}-%{version}%{pre}.gem
 %global gem_spec    %{gem_dir}/specifications/%{gem_name}-%{version}%{pre}.gemspec
 %global gem_docdir  %{gem_dir}/doc/%{gem_name}-%{version}%{pre}
@@ -67,11 +66,6 @@ sed -i -e 's/#\(s\.test_files\)/\1/' %{gem_name}.gemspec
 # Fix shebang (avoid Requires: /usr/bin/env)
 sed -i -e 's|#!/usr/bin/env ruby|#!/usr/bin/ruby|' bin/%{gem_name}
 
-# ref: https://github.com/asciidoctor/asciidoctor/issues/4684
-# the upstream plans to remove logger dep, but for now
-# add logger dep explicitly for ruby3_5
-%gemspec_add_dep -g logger -s ./%{gem_name}.gemspec
-
 %build
 gem build %{gem_name}.gemspec
 %gem_install -n %{gem_name}-%{version}%{pre}.gem
@@ -127,41 +121,6 @@ cp -a .%{gem_instdir}/man/*.1 \
 %doc %{gem_docdir}
 
 %changelog
-* Mon Dec 15 2025 Dominik Mierzejewski <dominik@greysector.net> - 2.0.26-1
-- updated to 2.0.26 (resolves rhbz#2265214)
-- droped upstreamed patches
-
-* Wed Nov 05 2025 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.0.20-11
-- Add logger dep for ruby3_5
-
-* Fri Jul 25 2025 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.20-10
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_43_Mass_Rebuild
-
-* Sat Jan 18 2025 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.20-9
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild
-
-* Thu Nov 14 2024 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.0.20-8
-- Backport upstream PR to remove base64 dependency
-- Backport upstream fix for ruby34 formatting change
-
-* Fri Jul 19 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.20-7
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
-
-* Fri Jan 26 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.20-6
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
-
-* Mon Jan 22 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.20-5
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
-
-* Fri Sep 29 2023 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.0.20-4
-- Apply the upstream PR to support ruby 3.3 Logger
-
-* Fri Jul 21 2023 Fedora Release Engineering <releng@fedoraproject.org> - 2.0.20-3
-- Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
-
-* Thu May 25 2023 Todd Zullinger <tmz@pobox.com> - 2.0.20-2
-- improve ruby-2.5 compatibility (epel8)
-
 * Thu May 18 2023 Todd Zullinger <tmz@pobox.com> - 2.0.20-1
 - update to asciidoctor 2.0.20 (rhbz#2208089)
 
diff --git a/sources b/sources
index 7fdf3a8..4d8a0c4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (asciidoctor-2.0.26.tar.gz) = 5e42079374fb1767dd0fd6767fd1e718d2c1c673e131ef1ae401c7b17e5b413168de3b25889eda35d2021ded55855b83b78f6110729e1a7765f757b37bbf5858
+SHA512 (asciidoctor-2.0.20.tar.gz) = b6b730de8f83e36630dc6146b4c0e07a26b502b695e78e50fc87790391126d52ef0b6b02b82ecb225adff680c94305b4e31403cc067bdbf1740e2d759417f440