Drop support for EOL Ruby versions 3.0 and 3.1

Author: horgh

.github/workflows/test.yml

@@ -17,8 +17,6 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         version:
           [
-            '3.0',
-            3.1,
             3.2,
             3.3,
             3.4,

.rubocop.yml

@@ -4,7 +4,7 @@ plugins:
     - rubocop-rake
 
 AllCops:
-    TargetRubyVersion: '3.0'
+    TargetRubyVersion: '3.2'
     NewCops: enable
 
 # Metrics are too arbitrary.

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.4.0
+
+* Ruby 3.2+ is now required. If you're using Ruby 3.0 or 3.1, please use
+  version 1.3.0 of this gem.
+
 ## 1.3.0 (2025-05-06)
 
 * Support for the GeoIP Anonymous Plus database has been added. To do a

README.md

@@ -347,7 +347,7 @@ client API, please see [our support page](https://www.maxmind.com/en/support).
 
 ## Requirements
 
-This code requires Ruby version 3.0 or higher.
+This code requires Ruby version 3.2 or higher.
 
 ## Contributing
 

maxmind-geoip2.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
     'rubygems_mfa_required' => 'true',
     'source_code_uri' => 'https://github.com/maxmind/GeoIP2-ruby',
   }
-  s.required_ruby_version = '>= 3.0'
+  s.required_ruby_version = '>= 3.2'
 
   s.add_dependency 'connection_pool', ['~> 2.2']
   s.add_dependency 'http', '>= 4.3', '< 6.0'