diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 0ac8e39bd7..29d4116d6f 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -106,6 +106,18 @@ jobs:
             database: postgresql
             storage: active_storage
             experimental: true
+          - rails: "8.1"
+            ruby: "3.4"
+            database: postgresql
+            storage: active_storage
+          - rails: "8.1"
+            ruby: "3.4"
+            database: mariadb
+            storage: dragonfly
+          - rails: "8.1"
+            ruby: "3.4"
+            database: sqlite
+            storage: active_storage
     continue-on-error: ${{ matrix.experimental == true }}
 
     env:
diff --git a/Gemfile b/Gemfile
index 551ae9426a..ee70533974 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ source "https://rubygems.org"
 
 gemspec
 
-rails_version = ENV.fetch("RAILS_VERSION", "8.0")
+rails_version = ENV.fetch("RAILS_VERSION", "8.1")
 gem "rails", "~> #{rails_version}.0"
 
 if ENV["DB"].nil? || ENV["DB"] == "sqlite"
diff --git a/alchemy_cms.gemspec b/alchemy_cms.gemspec
index 7d0b9a1d70..e90b85284a 100644
--- a/alchemy_cms.gemspec
+++ b/alchemy_cms.gemspec
@@ -34,12 +34,12 @@ Gem::Specification.new do |gem|
     activesupport
     railties
   ].each do |rails_gem|
-    gem.add_runtime_dependency rails_gem, [">= 7.1", "< 8.1"]
+    gem.add_runtime_dependency rails_gem, [">= 7.1", "< 8.2"]
   end
 
   gem.add_runtime_dependency "active_model_serializers", ["~> 0.10.14"]
   gem.add_runtime_dependency "acts_as_list", [">= 0.3", "< 2"]
-  gem.add_runtime_dependency "awesome_nested_set", ["~> 3.1", ">= 3.7.0"]
+  gem.add_runtime_dependency "awesome_nested_set", [">= 3.9.0", "< 4.0"]
   gem.add_runtime_dependency "cancancan", [">= 2.1", "< 4.0"]
   gem.add_runtime_dependency "csv", ["~> 3.3"]
   gem.add_runtime_dependency "dragonfly", ["~> 1.4"]
diff --git a/app/models/alchemy/element_definition.rb b/app/models/alchemy/element_definition.rb
index 219adc3ae8..9bf98221e1 100644
--- a/app/models/alchemy/element_definition.rb
+++ b/app/models/alchemy/element_definition.rb
@@ -4,7 +4,6 @@ module Alchemy
   class ElementDefinition
     include ActiveModel::Model
     include ActiveModel::Attributes
-    include Alchemy::Hints
 
     extend ActiveModel::Translation
 
@@ -23,6 +22,10 @@ class ElementDefinition
     attribute :hint
     attribute :icon
 
+    # Needs to be down here in order to have the attribute reader
+    # available after the attribute is defined.
+    include Alchemy::Hints
+
     validates :name,
       presence: true,
       format: {
diff --git a/app/models/alchemy/ingredient_definition.rb b/app/models/alchemy/ingredient_definition.rb
index aff0f80ff9..abcced4008 100644
--- a/app/models/alchemy/ingredient_definition.rb
+++ b/app/models/alchemy/ingredient_definition.rb
@@ -4,7 +4,6 @@ module Alchemy
   class IngredientDefinition
     include ActiveModel::Model
     include ActiveModel::Attributes
-    include Alchemy::Hints
 
     extend ActiveModel::Translation
 
@@ -18,6 +17,10 @@ class IngredientDefinition
     attribute :deprecated
     attribute :hint
 
+    # Needs to be down here in order to have the attribute reader
+    # available after the attribute is defined.
+    include Alchemy::Hints
+
     validates :role,
       presence: true,
       format: {
diff --git a/app/models/alchemy/page_definition.rb b/app/models/alchemy/page_definition.rb
index cdbdde0d15..b979bbe059 100644
--- a/app/models/alchemy/page_definition.rb
+++ b/app/models/alchemy/page_definition.rb
@@ -4,7 +4,6 @@ module Alchemy
   class PageDefinition
     include ActiveModel::Model
     include ActiveModel::Attributes
-    include Alchemy::Hints
 
     extend ActiveModel::Translation
 
@@ -22,6 +21,10 @@ class PageDefinition
     attribute :editable_by
     attribute :hint
 
+    # Needs to be down here in order to have the attribute reader
+    # available after the attribute is defined.
+    include Alchemy::Hints
+
     validates :name,
       presence: true,
       format: {
diff --git a/config/routes.rb b/config/routes.rb
index 66c7b92063..110dd2db0a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -7,7 +7,7 @@
 
   get "/sitemap.xml", to: "pages#sitemap", format: "xml"
 
-  scope Alchemy.admin_path, {constraints: Alchemy.admin_constraints} do
+  scope Alchemy.admin_path, constraints: Alchemy.admin_constraints do
     get "/", to: redirect("#{Alchemy.admin_path}/dashboard"), as: :admin
     get "/dashboard", to: "admin/dashboard#index", as: :admin_dashboard
     get "/dashboard/info", to: "admin/dashboard#info", as: :dashboard_info
@@ -16,7 +16,7 @@
     get "/leave", to: "admin/base#leave", as: :leave_admin
   end
 
-  namespace :admin, {path: Alchemy.admin_path, constraints: Alchemy.admin_constraints} do
+  namespace :admin, path: Alchemy.admin_path, constraints: Alchemy.admin_constraints do
     resources :nodes
 
     resources :pages do
diff --git a/spec/dummy/app/assets/stylesheets/alchemy/elements/_index.scss b/spec/dummy/app/assets/stylesheets/alchemy/elements/_index.scss
index 0fd20e62e2..c6a5ca7f6e 100644
--- a/spec/dummy/app/assets/stylesheets/alchemy/elements/_index.scss
+++ b/spec/dummy/app/assets/stylesheets/alchemy/elements/_index.scss
@@ -1,4 +1,4 @@
-@import "all_you_can_eat";
-@import "gallery";
-@import "header";
-@import "slider";
+@use "all_you_can_eat";
+@use "gallery";
+@use "header";
+@use "slider";
diff --git a/spec/dummy/app/assets/stylesheets/application.scss b/spec/dummy/app/assets/stylesheets/application.scss
index 15dcfcce5a..a19dfa3db3 100644
--- a/spec/dummy/app/assets/stylesheets/application.scss
+++ b/spec/dummy/app/assets/stylesheets/application.scss
@@ -1,4 +1,4 @@
-@import "alchemy/elements";
+@use "alchemy/elements";
 
 body {
   background-color: #f9f9f9;