Drop support for old rubocops

.github/workflows/ci.yml

@@ -24,13 +24,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby: ["2.7", "3.0", "3.1", "3.2", "3.3", ruby-head, jruby-9.4]
-        rubocop_version: ["0.92", "1.20", "1.66"]
-        exclude:
-          - ruby: ruby-head
-            rubocop_version: "0.92"
-          - ruby: ruby-head
-            rubocop_version: "1.20"
-
+        rubocop_version: ["1.48", "1.66"]
     env:
       BUNDLE_GEMFILE: "gemfiles/rubocop_${{ matrix.rubocop_version }}.gemfile"
     steps:

Appraisals

@@ -1,11 +1,7 @@
 # frozen_string_literal: true
 
-appraise 'rubocop-0.90' do
-  gem 'rubocop', '~> 0.90.0'
-end
-
-appraise 'rubocop-1.20' do
-  gem 'rubocop', '~> 1.20.0'
+appraise 'rubocop-1.48' do
+  gem 'rubocop', '~> 1.48.0'
 end
 
 appraise 'rubocop-1.66' do

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## master (unreleased)
 
+* [#52](https://github.com/rubocop/rubocop-thread_safety/pull/52): Drop support for RuboCop older than 1.48. ([@viralpraxis](https://github.com/viralpraxis))
 * [#48](https://github.com/rubocop/rubocop-thread_safety/pull/48): Do not report instance variables in `ActionDispatch` callbacks in singleton methods. ([@viralpraxis](https://github.com/viralpraxis))
 * [#43](https://github.com/rubocop/rubocop-thread_safety/pull/43): Make detection of ActiveSupport's `class_attribute` configurable. ([@viralpraxis](https://github.com/viralpraxis))
 * [#42](https://github.com/rubocop/rubocop-thread_safety/pull/42): Fix some `InstanceVariableInClassMethod` cop false positive offenses. ([@viralpraxis](https://github.com/viralpraxis))

gemfiles/rubocop_0.92.gemfile → gemfiles/rubocop_1.48.gemfile

@@ -2,6 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "rubocop", "~> 0.92.0"
+gem "base64", "~> 0.1.1"
+gem "rubocop", "~> 1.48.0"
 
 gemspec path: "../"

rubocop-thread_safety.gemspec

@@ -34,7 +34,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.7.0'
 
-  spec.add_dependency 'rubocop', '>= 0.92.0'
+  spec.add_dependency 'rubocop', '>= 1.48.1'
 
   spec.add_development_dependency 'appraisal'
   spec.add_development_dependency 'bundler', '>= 1.10', '< 3'