diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 162a3d0..a200a78 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,11 +17,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        gemfile: ['rails_7.0', 'rails_7.1', 'rails_7.2']
-        ruby: [3.3, 3.2, 3.1]
+        gemfile: ['rails_7.0', 'rails_7.1', 'rails_7.2', 'rails_8.0']
+        ruby: [3.3, 3.2]
         include:
+          - gemfile: rails_7.2
+            ruby: 3.1
+          - gemfile: rails_7.1
+            ruby: 3.1
           - gemfile: rails_7.0
-            ruby: '3.0'
+            ruby: 3.1
+          - gemfile: rails_7.0
+            ruby: 3.0
           - gemfile: rails_7.0
             ruby: 2.7
           - gemfile: rails_6.1
diff --git a/gemfiles/rails_8.0.gemfile b/gemfiles/rails_8.0.gemfile
new file mode 100644
index 0000000..e2678e9
--- /dev/null
+++ b/gemfiles/rails_8.0.gemfile
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "active_attr", "~> 0.16" # git: "https://github.com/mathieujobin/active_attr", branch: "rails-7.1-support"
+gem "rails", "~> 8.0.4"
+gem "sqlite3"
+
+gemspec path: "../"
diff --git a/lib/webhook_system/version.rb b/lib/webhook_system/version.rb
index 00ad6f3..04e43bc 100644
--- a/lib/webhook_system/version.rb
+++ b/lib/webhook_system/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module WebhookSystem
-  VERSION = '2.4.2'
+  VERSION = '2.4.3'
 end
diff --git a/spec/event_spec.rb b/spec/event_spec.rb
index da6139b..40d015e 100644
--- a/spec/event_spec.rb
+++ b/spec/event_spec.rb
@@ -6,6 +6,7 @@
   let(:widget_class) do
     Class.new do
       include PhModel
+
       attribute :foo
       attribute :bar
 
diff --git a/webhook_system.gemspec b/webhook_system.gemspec
index 096f6be..e1faa20 100644
--- a/webhook_system.gemspec
+++ b/webhook_system.gemspec
@@ -37,9 +37,9 @@ Gem::Specification.new do |gem|
   }
 
   gem.required_ruby_version = '> 2.7.0'
-  gem.add_runtime_dependency 'activesupport', '> 5.0', '< 8.0'
-  gem.add_runtime_dependency 'activerecord', '> 5.0', '< 8.0'
-  gem.add_runtime_dependency 'activejob', '> 5.0', '< 8.0'
+  gem.add_runtime_dependency 'activesupport', '> 5.0', '< 8.1'
+  gem.add_runtime_dependency 'activerecord', '> 5.0', '< 8.1'
+  gem.add_runtime_dependency 'activejob', '> 5.0', '< 8.1'
   gem.add_runtime_dependency 'faraday', '> 0.9'
   gem.add_runtime_dependency 'faraday-encoding', '>= 0.0.2', '< 1.0'
   gem.add_runtime_dependency 'ph_model'