diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0455bf25..b02f6a0a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,12 @@ jobs:
       matrix:
         include:
           # Recent Rubies and Rails
+          - ruby-version: '3.1'
+            rails-version: '7.0'
+          - ruby-version: '3.0'
+            rails-version: '7.0'
+          - ruby-version: '2.7'
+            rails-version: '7.0'
           - ruby-version: '2.6'
             rails-version: '6.1'
           - ruby-version: '2.6'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7eafc33d7..532a7ca7e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## 0.10.x
 
-### [master (unreleased)](https://github.com/rails-api/active_model_serializers/compare/v0.10.12...0-10-stable)
+### [master (unreleased)](https://github.com/rails-api/active_model_serializers/compare/v0.10.13...0-10-stable)
 
 Breaking changes:
 
@@ -8,10 +8,14 @@ Features:
 
 Fixes:
 
-- [#2399](https://github.com/rails-api/active_model_serializers/pull/2399) Handles edge case where requested current_page > total_pages (@f3z0)
-
 Misc:
 
+### [v0.10.13 (2022-01013)](https://github.com/rails-api/active_model_serializers/compare/v0.10.12...v0.10.13)
+
+Fixes:
+
+- [#2399](https://github.com/rails-api/active_model_serializers/pull/2399) Handles edge case where requested current_page > total_pages (@f3z0)
+
 ### [v0.10.12 (2020-12-10)](https://github.com/rails-api/active_model_serializers/compare/v0.10.11...v0.10.12)
 
 Fixes:
diff --git a/Gemfile b/Gemfile
index 8a72bcae9..94c0ca40c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ eval_gemfile local_gemfile if File.readable?(local_gemfile)
 # Specify your gem's dependencies in active_model_serializers.gemspec
 gemspec
 
-version = ENV['RAILS_VERSION'] || '4.2'
+version = ENV['RAILS_VERSION'] || '6.1'
 
 if version == 'master'
   gem 'rack', github: 'rack/rack'
diff --git a/active_model_serializers.gemspec b/active_model_serializers.gemspec
index 50cd71154..2d1855e8d 100644
--- a/active_model_serializers.gemspec
+++ b/active_model_serializers.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.1'
 
-  rails_versions = ['>= 4.1', '< 7.0']
+  rails_versions = ['>= 4.1', '< 7.1']
   spec.add_runtime_dependency 'activemodel', rails_versions
   # 'activesupport', rails_versions
   # 'builder'
diff --git a/lib/active_model/serializer/version.rb b/lib/active_model/serializer/version.rb
index c0565cabd..96ba7a425 100644
--- a/lib/active_model/serializer/version.rb
+++ b/lib/active_model/serializer/version.rb
@@ -2,6 +2,6 @@
 
 module ActiveModel
   class Serializer
-    VERSION = '0.10.12'.freeze
+    VERSION = '0.10.13'.freeze
   end
 end
diff --git a/test/action_controller/serialization_test.rb b/test/action_controller/serialization_test.rb
index 8d360b6f8..2286309b4 100644
--- a/test/action_controller/serialization_test.rb
+++ b/test/action_controller/serialization_test.rb
@@ -7,6 +7,7 @@ module Serialization
     class ImplicitSerializerTest < ActionController::TestCase
       class ImplicitSerializationTestController < ActionController::Base
         include SerializationTesting
+
         def render_using_implicit_serializer
           @profile = Profile.new(name: 'Name 1', description: 'Description 1', comments: 'Comments 1')
           render json: @profile
@@ -75,8 +76,12 @@ def render_json_array_object_without_serializer
           render json: [{ error: 'Result is Invalid' }]
         end
 
+        # HACK: to prevent the resetting of instance variables after each request in Rails 7
+        # see https://github.com/rails/rails/pull/43735
+        def clear_instance_variables_between_requests; end
+
         def update_and_render_object_with_cache_enabled
-          @post.updated_at = Time.zone.now
+          @post.updated_at = Time.zone.now # requires hack above to prevent `NoMethodError: undefined method `updated_at=' for nil:NilClass`
 
           generate_cached_serializer(@post)
           render json: @post