diff --git a/Gemfile.lock b/Gemfile.lock
index cd3b9354..c671e3a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ PATH
   specs:
     tailwindcss-rails (3.3.0)
       railties (>= 7.0.0)
-      tailwindcss-ruby
+      tailwindcss-ruby (~> 4.0)
 
 GEM
   remote: https://rubygems.org/
@@ -140,12 +140,11 @@ GEM
       io-console (~> 0.5)
     securerandom (0.4.1)
     stringio (3.1.2)
-    tailwindcss-ruby (3.4.17)
-    tailwindcss-ruby (3.4.17-aarch64-linux)
-    tailwindcss-ruby (3.4.17-arm-linux)
-    tailwindcss-ruby (3.4.17-arm64-darwin)
-    tailwindcss-ruby (3.4.17-x86_64-darwin)
-    tailwindcss-ruby (3.4.17-x86_64-linux)
+    tailwindcss-ruby (4.0.0)
+    tailwindcss-ruby (4.0.0-aarch64-linux-gnu)
+    tailwindcss-ruby (4.0.0-arm64-darwin)
+    tailwindcss-ruby (4.0.0-x86_64-darwin)
+    tailwindcss-ruby (4.0.0-x86_64-linux-gnu)
     thor (1.3.2)
     timeout (0.4.3)
     tzinfo (2.0.6)
diff --git a/lib/generators/tailwindcss/authentication/templates/app/views/passwords/edit.html.erb b/lib/generators/tailwindcss/authentication/templates/app/views/passwords/edit.html.erb
index 707bbe5c..5c989810 100644
--- a/lib/generators/tailwindcss/authentication/templates/app/views/passwords/edit.html.erb
+++ b/lib/generators/tailwindcss/authentication/templates/app/views/passwords/edit.html.erb
@@ -7,11 +7,11 @@
 
   <%%= form_with url: password_path(params[:token]), method: :put, class: "contents" do |form| %>
     <div class="my-5">
-      <%%= form.password_field :password, required: true, autocomplete: "new-password", placeholder: "Enter new password", maxlength: 72, class: "block shadow rounded-md border border-gray-400 outline-none focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
+      <%%= form.password_field :password, required: true, autocomplete: "new-password", placeholder: "Enter new password", maxlength: 72, class: "block shadow-sm rounded-md border border-gray-400 outline-hidden focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
     </div>
 
     <div class="my-5">
-      <%%= form.password_field :password_confirmation, required: true, autocomplete: "new-password", placeholder: "Repeat new password", maxlength: 72, class: "block shadow rounded-md border border-gray-400 outline-none focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
+      <%%= form.password_field :password_confirmation, required: true, autocomplete: "new-password", placeholder: "Repeat new password", maxlength: 72, class: "block shadow-sm rounded-md border border-gray-400 outline-hidden focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
     </div>
 
     <div class="inline">
diff --git a/lib/generators/tailwindcss/authentication/templates/app/views/passwords/new.html.erb b/lib/generators/tailwindcss/authentication/templates/app/views/passwords/new.html.erb
index 72c434de..e5862200 100644
--- a/lib/generators/tailwindcss/authentication/templates/app/views/passwords/new.html.erb
+++ b/lib/generators/tailwindcss/authentication/templates/app/views/passwords/new.html.erb
@@ -7,7 +7,7 @@
 
   <%%= form_with url: passwords_path, class: "contents" do |form| %>
     <div class="my-5">
-      <%%= form.email_field :email_address, required: true, autofocus: true, autocomplete: "username", placeholder: "Enter your email address", value: params[:email_address], class: "block shadow rounded-md border border-gray-400 outline-none focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
+      <%%= form.email_field :email_address, required: true, autofocus: true, autocomplete: "username", placeholder: "Enter your email address", value: params[:email_address], class: "block shadow-sm rounded-md border border-gray-400 outline-hidden focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
     </div>
 
     <div class="inline">
diff --git a/lib/generators/tailwindcss/authentication/templates/app/views/sessions/new.html.erb b/lib/generators/tailwindcss/authentication/templates/app/views/sessions/new.html.erb
index 92d64b79..64c145c0 100644
--- a/lib/generators/tailwindcss/authentication/templates/app/views/sessions/new.html.erb
+++ b/lib/generators/tailwindcss/authentication/templates/app/views/sessions/new.html.erb
@@ -11,11 +11,11 @@
 
   <%%= form_with url: session_url, class: "contents" do |form| %>
     <div class="my-5">
-      <%%= form.email_field :email_address, required: true, autofocus: true, autocomplete: "username", placeholder: "Enter your email address", value: params[:email_address], class: "block shadow rounded-md border border-gray-400 focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
+      <%%= form.email_field :email_address, required: true, autofocus: true, autocomplete: "username", placeholder: "Enter your email address", value: params[:email_address], class: "block shadow-sm rounded-md border border-gray-400 focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
     </div>
 
     <div class="my-5">
-      <%%= form.password_field :password, required: true, autocomplete: "current-password", placeholder: "Enter your password", maxlength: 72, class: "block shadow rounded-md border border-gray-400 focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
+      <%%= form.password_field :password, required: true, autocomplete: "current-password", placeholder: "Enter your password", maxlength: 72, class: "block shadow-sm rounded-md border border-gray-400 focus:outline-blue-600 px-3 py-2 mt-2 w-full" %>
     </div>
 
     <div class="col-span-6 sm:flex sm:items-center sm:gap-4">
diff --git a/lib/generators/tailwindcss/scaffold/templates/_form.html.erb.tt b/lib/generators/tailwindcss/scaffold/templates/_form.html.erb.tt
index 93490a15..9e392609 100644
--- a/lib/generators/tailwindcss/scaffold/templates/_form.html.erb.tt
+++ b/lib/generators/tailwindcss/scaffold/templates/_form.html.erb.tt
@@ -15,23 +15,23 @@
   <div class="my-5">
 <% if attribute.password_digest? -%>
     <%%= form.label :password %>
-    <%%= form.password_field :password, class: ["block shadow rounded-md border outline-none px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:password].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:password].any?}] %>
+    <%%= form.password_field :password, class: ["block shadow-sm rounded-md border outline-hidden px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:password].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:password].any?}] %>
   </div>
 
   <div class="my-5">
     <%%= form.label :password_confirmation %>
-    <%%= form.password_field :password_confirmation, class: ["block shadow rounded-md border outline-none px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:password_confirmation].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:password_confirmation].any?}] %>
+    <%%= form.password_field :password_confirmation, class: ["block shadow-sm rounded-md border outline-hidden px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:password_confirmation].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:password_confirmation].any?}] %>
 <% elsif attribute.attachments? -%>
     <%%= form.label :<%= attribute.column_name %> %>
-    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, multiple: true, class: ["block shadow rounded-md border outline-none px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:password].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:password].any?}] %>
+    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, multiple: true, class: ["block shadow-sm rounded-md border outline-hidden px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:password].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:password].any?}] %>
 <% else -%>
     <%%= form.label :<%= attribute.column_name %> %>
 <% if attribute.field_type == :textarea || attribute.field_type == :text_area -%>
-    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, rows: 4, class: ["block shadow rounded-md border outline-none px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].any?}] %>
+    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, rows: 4, class: ["block shadow-sm rounded-md border outline-hidden px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].any?}] %>
 <% elsif attribute.field_type == :checkbox || attribute.field_type == :check_box -%>
-    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, class: ["block shadow rounded-md border outline-none mt-2 h-5 w-5", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].any?}] %>
+    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, class: ["block shadow-sm rounded-md border outline-hidden mt-2 h-5 w-5", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].any?}] %>
 <% else -%>
-    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, class: ["block shadow rounded-md border outline-none px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].any?}] %>
+    <%%= form.<%= attribute.field_type %> :<%= attribute.column_name %>, class: ["block shadow-sm rounded-md border outline-hidden px-3 py-2 mt-2 w-full", {"border-gray-400 focus:outline-blue-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].none?, "border-red-400 focus:outline-red-600": <%= model_resource_name %>.errors[:<%= attribute.column_name %>].any?}] %>
 <% end -%>
 <% end -%>
   </div>
diff --git a/tailwindcss-rails.gemspec b/tailwindcss-rails.gemspec
index 8d893029..0b31c4a8 100644
--- a/tailwindcss-rails.gemspec
+++ b/tailwindcss-rails.gemspec
@@ -19,5 +19,5 @@ Gem::Specification.new do |spec|
   spec.files = Dir["{app,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
   spec.add_dependency "railties", ">= 7.0.0"
-  spec.add_dependency "tailwindcss-ruby"
+  spec.add_dependency "tailwindcss-ruby", "~> 4.0"
 end