diff --git a/.github/workflows/super_diff.yml b/.github/workflows/super_diff.yml
index 230691d1..bbd48caa 100644
--- a/.github/workflows/super_diff.yml
+++ b/.github/workflows/super_diff.yml
@@ -62,11 +62,15 @@ jobs:
           - rails_7_0
           - rails_7_1
           - rails_7_2
+          - rails_8_0
           - no_rails
         rspec_appraisal:
           - rspec_lt_3_10
           - rspec_gte_3_10
           - rspec_gte_3_13
+        exclude:
+        - ruby: "3.1"
+          rails_appraisal: "rails_8_0"
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.rails_appraisal }}_${{ matrix.rspec_appraisal }}.gemfile
     steps:
diff --git a/Appraisals b/Appraisals
index 227b12d4..d70a48b4 100644
--- a/Appraisals
+++ b/Appraisals
@@ -37,6 +37,13 @@ appraisals = {
       gem 'rails', '~> 7.2.0'
       gem 'sqlite3', '~> 1.4.0', platform: %i[ruby mswin mingw]
     end,
+  rails_8_0:
+    proc do
+      instance_eval(&rails_dependencies)
+
+      gem 'rails', '~> 8.0.0'
+      gem 'sqlite3', '>= 2.1', platform: %i[ruby mswin mingw]
+    end,
   no_rails: proc {},
   rspec_lt_3_10:
     proc do |with_rails|
@@ -73,7 +80,7 @@ appraisals = {
     end
 }
 
-rails_appraisals = %i[no_rails rails_6_1 rails_7_0 rails_7_1 rails_7_2]
+rails_appraisals = %i[no_rails rails_6_1 rails_7_0 rails_7_1 rails_7_2 rails_8_0]
 rspec_appraisals = %i[rspec_lt_3_10 rspec_gte_3_10 rspec_gte_3_13]
 
 rails_appraisals.each do |rails_appraisal|
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53c28b57..a65b4767 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
 
 - Add official Rails 7.1 support. [#278](https://github.com/splitwise/super_diff/pull/278)
 - Add official Rails 7.2 support. [#279](https://github.com/splitwise/super_diff/pull/279)
+- Add official Rails 8.0 support. [#281](https://github.com/splitwise/super_diff/pull/281)
 
 ### Other changes
 
diff --git a/gemfiles/rails_8_0_rspec_gte_3_10.gemfile b/gemfiles/rails_8_0_rspec_gte_3_10.gemfile
new file mode 100644
index 00000000..3c0055e1
--- /dev/null
+++ b/gemfiles/rails_8_0_rspec_gte_3_10.gemfile
@@ -0,0 +1,30 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal"
+gem "bundler-audit"
+gem "childprocess"
+gem "climate_control"
+gem "prettier_print"
+gem "pry-byebug", platform: :mri
+gem "pry-nav", platform: :jruby
+gem "rake"
+gem "rubocop"
+gem "syntax_tree"
+gem "syntax_tree-haml"
+gem "syntax_tree-rbs"
+gem "activerecord-jdbcsqlite3-adapter", platform: :jruby
+gem "jdbc-sqlite3", platform: :jruby
+gem "net-ftp"
+gem "combustion"
+gem "rails", "~> 8.0.0"
+gem "sqlite3", ">= 2.1", platform: [:ruby, :mswin, :mingw]
+gem "rspec", "3.12.0"
+gem "rspec-core", "3.12.0"
+gem "rspec-expectations", "3.12.3"
+gem "rspec-mocks", "3.12.0"
+gem "rspec-support", "3.12.0"
+gem "rspec-rails"
+
+gemspec path: "../"
diff --git a/gemfiles/rails_8_0_rspec_gte_3_13.gemfile b/gemfiles/rails_8_0_rspec_gte_3_13.gemfile
new file mode 100644
index 00000000..2aa74ecb
--- /dev/null
+++ b/gemfiles/rails_8_0_rspec_gte_3_13.gemfile
@@ -0,0 +1,30 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal"
+gem "bundler-audit"
+gem "childprocess"
+gem "climate_control"
+gem "prettier_print"
+gem "pry-byebug", platform: :mri
+gem "pry-nav", platform: :jruby
+gem "rake"
+gem "rubocop"
+gem "syntax_tree"
+gem "syntax_tree-haml"
+gem "syntax_tree-rbs"
+gem "activerecord-jdbcsqlite3-adapter", platform: :jruby
+gem "jdbc-sqlite3", platform: :jruby
+gem "net-ftp"
+gem "combustion"
+gem "rails", "~> 8.0.0"
+gem "sqlite3", ">= 2.1", platform: [:ruby, :mswin, :mingw]
+gem "rspec", "3.13.0"
+gem "rspec-core", "3.13.0"
+gem "rspec-expectations", "3.13.0"
+gem "rspec-mocks", "3.13.0"
+gem "rspec-support", "3.13.0"
+gem "rspec-rails"
+
+gemspec path: "../"
diff --git a/gemfiles/rails_8_0_rspec_lt_3_10.gemfile b/gemfiles/rails_8_0_rspec_lt_3_10.gemfile
new file mode 100644
index 00000000..2b687025
--- /dev/null
+++ b/gemfiles/rails_8_0_rspec_lt_3_10.gemfile
@@ -0,0 +1,26 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal", git: "https://github.com/thoughtbot/appraisal"
+gem "bundler-audit"
+gem "childprocess"
+gem "climate_control"
+gem "prettier_print"
+gem "pry-byebug", platform: :mri
+gem "pry-nav", platform: :jruby
+gem "rake"
+gem "rubocop"
+gem "syntax_tree"
+gem "syntax_tree-haml"
+gem "syntax_tree-rbs"
+gem "activerecord-jdbcsqlite3-adapter", platform: :jruby
+gem "jdbc-sqlite3", platform: :jruby
+gem "net-ftp"
+gem "combustion"
+gem "rails", "~> 8.0.0"
+gem "sqlite3", ">= 2.1", platform: [:ruby, :mswin, :mingw]
+gem "rspec", "~> 3.9.0"
+gem "rspec-rails"
+
+gemspec path: "../"