From 929a8ad6614fc955d71e48f99856bf76ea15c94e Mon Sep 17 00:00:00 2001
From: tknzk <info@tknzk.dev>
Date: Sat, 2 Jan 2021 11:16:46 +0900
Subject: [PATCH] drop Ruby 2.4

---
 .circleci/config.yml | 9 ---------
 jpostcode.gemspec    | 1 +
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index ce3b2251..a61500b4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -101,14 +101,6 @@ jobs:
       - submodule_sync
       - bundle_gems
       - run_tests
-  run_tests_on_ruby_2_4:
-    executor: ruby_2_4
-    steps:
-      - install_system_dependencies
-      - checkout
-      - submodule_sync
-      - bundle_gems
-      - run_tests
 
 workflows:
   version: 2
@@ -118,4 +110,3 @@ workflows:
       - run_tests_on_ruby_2_7
       - run_tests_on_ruby_2_6
       - run_tests_on_ruby_2_5
-      - run_tests_on_ruby_2_4
diff --git a/jpostcode.gemspec b/jpostcode.gemspec
index acad8d99..bf7dba3c 100644
--- a/jpostcode.gemspec
+++ b/jpostcode.gemspec
@@ -14,6 +14,7 @@ Gem::Specification.new do |spec|
   spec.description   = 'A Ruby implementation for Japan postcode.'
   spec.homepage      = 'https://github.com/kufu/jpostcode-rb'
   spec.license       = 'MIT'
+  spec.required_ruby_version = '>= 2.5'
 
   # Prevent pushing this gem to RubyGems.org by setting 'allowed_push_host', or
   # delete this section to allow pushing this gem to any host.