diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 6f55f63..70c4a2e 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -25,6 +25,7 @@ jobs:
           - 2.7
           - 3.0
           - 3.1
+          - 3.2
         gemfile:
           - 3.2.gemfile
           - 4.2.gemfile
@@ -34,6 +35,7 @@ jobs:
           - 6.0.gemfile
           - 6.1.gemfile
           - 7.0.gemfile
+          - 7.2.gemfile
         exclude:
           - gemfile: 3.2.gemfile
             ruby: 2.6
@@ -43,24 +45,34 @@ jobs:
             ruby: 3.0
           - gemfile: 3.2.gemfile
             ruby: 3.1
+          - gemfile: 3.2.gemfile
+            ruby: 3.2
           - gemfile: 4.2.gemfile
             ruby: 2.7
           - gemfile: 4.2.gemfile
             ruby: 3.0
           - gemfile: 4.2.gemfile
             ruby: 3.1
+          - gemfile: 4.2.gemfile
+            ruby: 3.2
           - gemfile: 5.0.gemfile
             ruby: 3.0
           - gemfile: 5.0.gemfile
             ruby: 3.1
+          - gemfile: 5.0.gemfile
+            ruby: 3.2
           - gemfile: 5.1.gemfile
             ruby: 3.0
           - gemfile: 5.1.gemfile
             ruby: 3.1
+          - gemfile: 5.1.gemfile
+            ruby: 3.2
           - gemfile: 5.2.gemfile
             ruby: 3.0
           - gemfile: 5.2.gemfile
             ruby: 3.1
+          - gemfile: 5.2.gemfile
+            ruby: 3.2
           - gemfile: 6.0.gemfile
             ruby: 2.3
           - gemfile: 6.1.gemfile
@@ -69,6 +81,14 @@ jobs:
             ruby: 2.3
           - gemfile: 7.0.gemfile
             ruby: 2.6
+          - gemfile: 7.2.gemfile
+            ruby: 2.3
+          - gemfile: 7.2.gemfile
+            ruby: 2.6
+          - gemfile: 7.2.gemfile
+            ruby: 2.7
+          - gemfile: 7.2.gemfile
+            ruby: 3.0
     env:
       BUNDLE_GEMFILE: "gemfiles/${{ matrix.gemfile }}"
 
diff --git a/gemfiles/7.2.gemfile b/gemfiles/7.2.gemfile
new file mode 100644
index 0000000..ba4a865
--- /dev/null
+++ b/gemfiles/7.2.gemfile
@@ -0,0 +1,11 @@
+source 'https://rubygems.org'
+
+gem 'zeitwerk'
+gem 'activerecord', '~> 7.2.1'
+
+group :test do
+  gem 'simplecov', '< 0.18'
+  gem 'sqlite3', '~> 1.4.1'
+end
+
+gemspec path: '../'
diff --git a/test/lib/models/user.rb b/test/lib/models/user.rb
index c3099eb..d1269cb 100644
--- a/test/lib/models/user.rb
+++ b/test/lib/models/user.rb
@@ -1,7 +1,12 @@
 # frozen_string_literal: true
 
 class User < ActiveRecord::Base
-  serialize :serialized_attribute, Hash
+  if Gem::Version.new(ActiveRecord::VERSION::STRING) < Gem::Version.new('7.1.0')
+    serialize :serialized_attribute, Hash
+  else
+    serialize :serialized_attribute, type: Hash
+  end
+
   has_many :posts
   has_many :sent_messages,     class_name: 'UserMessage', foreign_key: :sender_user_id,   dependent: :destroy
   has_many :received_messages, class_name: 'UserMessage', foreign_key: :receiver_user_id, dependent: :destroy