diff --git a/.github/workflows/gem-push.yml b/.github/workflows/gem-push.yml
index d30cf95..c22c24d 100644
--- a/.github/workflows/gem-push.yml
+++ b/.github/workflows/gem-push.yml
@@ -12,11 +12,11 @@ jobs:
       packages: write
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up Ruby 2.6
-        uses: actions/setup-ruby@v1
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.6.x
+          ruby-version: "3.1"
 
       - name: Publish to RubyGems
         run: |
diff --git a/rh-activerecord-diff.gemspec b/rh-activerecord-diff.gemspec
index 365ef36..fd1dbd2 100644
--- a/rh-activerecord-diff.gemspec
+++ b/rh-activerecord-diff.gemspec
@@ -3,8 +3,8 @@ require_relative 'lib/active_record/diff/version'
 Gem::Specification.new do |spec|
   spec.name          = "rh-activerecord-diff"
   spec.version       = ActiveRecord::Diff::VERSION
-  spec.authors       = ["patorash"]
-  spec.email         = ["chariderpato@gmail.com"]
+  spec.authors       = ["patorash", "tokai3594"]
+  spec.email         = ["chariderpato@gmail.com", "t-shinohara@rhizome-e.com"]
 
   spec.summary       = %q{Simple ActiveRecord diff functionality}
   spec.description   = %q{Simple ActiveRecord diff functionality}