diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d2c1ba59..3251683b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,6 +26,7 @@ jobs:
           - 3.2
           - 3.1
         rails:
+          - 8.1
           - 8.0
           - 7.2
         include:
@@ -39,6 +40,7 @@ jobs:
           - { ruby: '2.4',  rails: '5'   }
         exclude:
           - { ruby: '3.1',  rails: '8.0'  }
+          - { ruby: '3.1',  rails: '8.1'  }
 
     env:
       RAILS_VERSION: "${{ matrix.rails }}"
@@ -59,12 +61,8 @@ jobs:
           rubygems: latest
           bundler-cache: true
 
-      - name: RSpec & publish code coverage
-        uses: paambaati/codeclimate-action@v8
-        env:
-          CC_TEST_REPORTER_ID: b7ba588af2a540fa96c267b3655a2afe31ea29976dc25905a668dd28d5e88915
-        with:
-          coverageCommand: bin/rake
+      - name: RSpec
+        run: bin/rake
         continue-on-error: ${{ matrix.allow-fail }}
         id: test
 
diff --git a/Gemfile b/Gemfile
index 6d16aead..521884d0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -28,8 +28,9 @@ else
   gem 'rails', "~> #{rails_version}.0"
 end
 
+# FIXME: Remove the later condition after `mongoid` supports Rails 8.1
 gem 'mongoid' unless
-    rails_version == 'edge'
+  rails_version == 'edge' || rails_version == '8.1'
 gem 'active_model_serializers'
 
 case RUBY_VERSION
@@ -49,4 +50,10 @@ end
 
 if RUBY_VERSION < "3.0.0"
   gem "concurrent-ruby", "< 1.3.5"
-end
\ No newline at end of file
+end
+
+# FIXME: Use releases gems after they support Rails 8.1
+if rails_version.to_s >= '8.1'
+  gem 'rspec-activerecord-expectations', github: 'y-yagi/rspec-activerecord-expectations', branch: 'support_rails81'
+  gem 'mongoid', github: 'mongodb/mongoid', ref: 'eac49f0'
+end
diff --git a/README.md b/README.md
index bdb7053a..588434b3 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
 # Draper: View Models for Rails
 
 [![Actions Status](https://github.com/drapergem/draper/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/drapergem/draper/actions?query=workflow%3Aci+branch%3Amaster)
-[![Code Climate](https://codeclimate.com/github/drapergem/draper.svg)](https://codeclimate.com/github/drapergem/draper)
-[![Test Coverage](https://api.codeclimate.com/v1/badges/0d40c43951d516bf6985/test_coverage)](https://codeclimate.com/github/drapergem/draper/test_coverage)
 [![Inline docs](http://inch-ci.org/github/drapergem/draper.svg?branch=master)](http://inch-ci.org/github/drapergem/draper)
 
 Draper adds an object-oriented layer of presentation logic to your Rails
diff --git a/lib/draper/railtie.rb b/lib/draper/railtie.rb
index f5d25e0e..563f72c1 100644
--- a/lib/draper/railtie.rb
+++ b/lib/draper/railtie.rb
@@ -56,7 +56,12 @@ def initialize_view_context
       Draper::ViewContext.build
     end
 
-    console { initialize_view_context }
+    console do
+      initialize_view_context
+      if ActiveSupport.gem_version >= Gem::Version.new('8.1.0')
+        ActiveSupport::ExecutionContext.nestable = false
+      end
+    end
 
     runner { initialize_view_context }