diff --git a/.rubocop.yml b/.rubocop.yml
index e0336495..d027f549 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,7 +1,7 @@
 inherit_from: .rubocop_todo.yml
 
 AllCops:
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
   DisplayCopNames: true
   SuggestExtensions: false
   NewCops: enable
diff --git a/Gemfile b/Gemfile
index e5b1ac54..e72c497f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -37,4 +37,6 @@ group :development do
   # Gems used by the ActiveRecord test suite
   gem "bcrypt"
   gem "mocha"
+  gem "sqlite3"
+  gem "msgpack"
 end
diff --git a/History.md b/History.md
index b48638ef..39e09809 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,7 @@
+### 9.0.0 / 2023-10-06
+
+* Rails 7.1 support (seuros) #382
+
 ### 8.0.3 / 2023-10-05
 
 * Fix `default_function` schema dumping in virtual columns (wizardofelves) #383
diff --git a/README.md b/README.md
index 21c8e4ab..dfd006bf 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,14 @@ gem 'ffi-geos'
 
 _JRuby support for Rails 4.0 and 4.1 was added in version 2.2.0_
 
+#### Version 9.x supports ActiveRecord 7.1
+
+```
+ActiveRecord 7.1
+Ruby 3.0.0+
+PostGIS 2.0+
+```
+
 #### Version 8.x supports ActiveRecord 7.0
 
 Requirements:
diff --git a/activerecord-postgis-adapter.gemspec b/activerecord-postgis-adapter.gemspec
index 8efe5193..996aae52 100644
--- a/activerecord-postgis-adapter.gemspec
+++ b/activerecord-postgis-adapter.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.files = Dir["lib/**/*", "LICENSE.txt"]
   spec.platform = Gem::Platform::RUBY
 
-  spec.required_ruby_version = ">= 2.7.0"
+  spec.required_ruby_version = ">= 3.0.0"
 
   spec.add_dependency "activerecord", "~> 7.1.0"
   spec.add_dependency "rgeo-activerecord", "~> 7.0.0"
diff --git a/lib/active_record/connection_adapters/postgis/version.rb b/lib/active_record/connection_adapters/postgis/version.rb
index 37f6b9ee..671fa6a5 100644
--- a/lib/active_record/connection_adapters/postgis/version.rb
+++ b/lib/active_record/connection_adapters/postgis/version.rb
@@ -3,7 +3,7 @@
 module ActiveRecord
   module ConnectionAdapters
     module PostGIS
-      VERSION = "8.0.3"
+      VERSION = "9.0.0"
     end
   end
 end
diff --git a/test/schema/postgis_specific_schema.rb b/test/schema/postgis_specific_schema.rb
index 97fddbdd..535b2153 100644
--- a/test/schema/postgis_specific_schema.rb
+++ b/test/schema/postgis_specific_schema.rb
@@ -4,8 +4,8 @@
 # suite.
 
 ActiveRecord::Schema.define do
-  enable_extension!("uuid-ossp", ActiveRecord::Base.connection)
-  enable_extension!("pgcrypto",  ActiveRecord::Base.connection) if ActiveRecord::Base.connection.supports_pgcrypto_uuid?
+  ActiveRecord::TestCase.enable_extension!("uuid-ossp", ActiveRecord::Base.connection)
+  ActiveRecord::TestCase.enable_extension!("pgcrypto",  ActiveRecord::Base.connection) if ActiveRecord::Base.connection.supports_pgcrypto_uuid?
 
   uuid_default = connection.supports_pgcrypto_uuid? ? {} : { default: "uuid_generate_v4()" }