From c2b060e372ca7b9665657d149b0720422007fdc7 Mon Sep 17 00:00:00 2001
From: Tsukuru Tanimichi <info+github@ttanimichi.com>
Date: Wed, 15 Aug 2018 18:02:31 +0900
Subject: [PATCH] Support of Ruby 2.2 has ended

ref. https://www.ruby-lang.org/en/
---
 .travis.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 5458bea..f1084d1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,5 +3,6 @@ before_script: 'bundle exec rake test:setup'
 script: 'bundle exec rake test:all'
 cache: bundler
 rvm:
-  - 2.3.3
-  - 2.2.2
+  - 2.5.1
+  - 2.4.4
+  - 2.3.7