From 5a10c1e7278fd03262f69671d0292e879ef3e071 Mon Sep 17 00:00:00 2001
From: Marat Radchenko <marat@slonopotamus.org>
Date: Wed, 23 Oct 2024 11:55:54 +0300
Subject: [PATCH] bump the oldest supported Ruby version to 2.7

---
 .github/workflows/ci.yml           | 2 +-
 .rubocop.yml                       | 2 +-
 CHANGELOG.adoc                     | 1 +
 README.adoc                        | 2 +-
 asciidoctor-epub3.gemspec          | 2 +-
 docs/modules/ROOT/pages/index.adoc | 2 +-
 6 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0f2f582..24d92cd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
     needs: activate
     strategy:
       matrix:
-        ruby: ['jruby-9.3', 'jruby-9.4', '2.6', '3.3']
+        ruby: ['jruby-9.4', '2.7', '3.3']
         os: [ubuntu-latest, windows-latest]
         include:
           - ruby: '3.3'
diff --git a/.rubocop.yml b/.rubocop.yml
index 58e5470..9760c3e 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -3,7 +3,7 @@ require:
   - rubocop-rspec
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 2.6
+  TargetRubyVersion: 2.7
 Gemspec/RequireMFA:
   Enabled: false
 Layout/LineLength:
diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index e5f42a2..196edd1 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -9,6 +9,7 @@ For a detailed view of what has changed, refer to the {uri-repo}/commits/master[
 
 * fix crash when running in environments with non-Unicode locale (#475)
 * update Font Awesome Solid to 6.6.0
+* bump the oldest supported Ruby version to 2.7
 
 == 2.1.3 (2024-05-12) - @slonopotamus
 
diff --git a/README.adoc b/README.adoc
index 67a6d13..a8223b1 100644
--- a/README.adoc
+++ b/README.adoc
@@ -21,7 +21,7 @@ Detailed installation and usage instructions can be found on the https://docs.as
 == Installation
 
 {project-name} is published on RubyGems.org.
-{project-name} requires Ruby 2.6 or newer.
+{project-name} requires Ruby 2.7 or newer.
 You can install the published gem using the following command:
 
 [source,shell script]
diff --git a/asciidoctor-epub3.gemspec b/asciidoctor-epub3.gemspec
index f601596..38069eb 100644
--- a/asciidoctor-epub3.gemspec
+++ b/asciidoctor-epub3.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.homepage = 'https://github.com/asciidoctor/asciidoctor-epub3'
   s.license = 'MIT'
 
-  s.required_ruby_version = '>= 2.6.0'
+  s.required_ruby_version = '>= 2.7.0'
 
   files = begin
     (result = Open3.popen3('git ls-files -z') { |_, out| out.read }.split %(\0)).empty? ? Dir['**/*'] : result
diff --git a/docs/modules/ROOT/pages/index.adoc b/docs/modules/ROOT/pages/index.adoc
index 0e1a39a..faea2a4 100644
--- a/docs/modules/ROOT/pages/index.adoc
+++ b/docs/modules/ROOT/pages/index.adoc
@@ -119,7 +119,7 @@ This is no longer the case. If you followed the old rules, chances are your docu
 
 == Prerequisites
 
-All that's needed to use {project-name} is Ruby 2.5 or newer and a few Ruby gems (including at least Asciidoctor 1.5.6), which we'll explain how to install in the next section.
+All that's needed to use {project-name} is Ruby 2.7 or newer and a few Ruby gems, which we'll explain how to install in the next section.
 
 To check if you have Ruby available, use the `ruby` command to query the installed version: