diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 7591eec..068b163 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -10,15 +10,14 @@ jobs:
 
     strategy:
       matrix:
+        ruby-version: [3.3.6]
+        rails-version:
+          - 71
+          - 72
+          - 80
         include:
           - ruby-version: 3.2.3
             rails-version: 70
-          # - ruby-version: 3.3.5
-            # rails-version: 70
-          - ruby-version: 3.3.5
-            rails-version: 71
-          - ruby-version: 3.3.5
-            rails-version: 72
 
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/rails_${{ matrix.rails-version }}.gemfile
diff --git a/Appraisals b/Appraisals
index 3f4f8d0..8c7c8ec 100644
--- a/Appraisals
+++ b/Appraisals
@@ -11,3 +11,7 @@ end
 appraise 'rails_72' do
   gem 'rails', '~>7.2.1'
 end
+
+appraise 'rails_80' do
+  gem 'rails', '~>8.0.0'
+end
diff --git a/gemfiles/rails_80.gemfile b/gemfiles/rails_80.gemfile
new file mode 100644
index 0000000..c7a6579
--- /dev/null
+++ b/gemfiles/rails_80.gemfile
@@ -0,0 +1,18 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "pg"
+gem "aws-sdk-s3", "=1.143.0"
+gem "fog-local"
+gem "delayed_paperclip", git: "https://github.com/insales/delayed_paperclip.git"
+gem "rails", "~>8.0.0"
+gem "sidekiq", "~>6.5"
+gem "test-unit"
+gem "simplecov", require: false
+gem "mocha"
+gem "thoughtbot-shoulda", ">= 2.9.0"
+gem "pry"
+gem "pry-byebug"
+
+gemspec path: "../"
diff --git a/paperclip.gemspec b/paperclip.gemspec
index b004d40..d5864b5 100644
--- a/paperclip.gemspec
+++ b/paperclip.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
   s.rubyforge_project = %q{paperclip}
   s.summary = %q{File attachments as attributes for ActiveRecord}
 
-  s.add_dependency 'activesupport', [">= 5.0", '< 8']
+  s.add_dependency 'activesupport', [">= 5.0", '< 9']
   s.add_dependency 'addressable'
   s.add_dependency 'fastimage'
 end