diff --git a/Gemfile b/Gemfile
index ac9b1a4..b2ba268 100644
--- a/Gemfile
+++ b/Gemfile
@@ -61,5 +61,4 @@ end
 
 group :production do
   gem "puma"
-  gem "rails_12factor"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 5567300..52a305d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -143,32 +143,32 @@ GEM
     formatador (0.3.0)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
-    i18n (1.8.10)
+    i18n (1.8.11)
       concurrent-ruby (~> 1.0)
     ipaddress (0.8.3)
     jquery-rails (4.4.0)
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    kaminari (1.2.1)
+    kaminari (1.2.2)
       activesupport (>= 4.1.0)
-      kaminari-actionview (= 1.2.1)
-      kaminari-activerecord (= 1.2.1)
-      kaminari-core (= 1.2.1)
-    kaminari-actionview (1.2.1)
+      kaminari-actionview (= 1.2.2)
+      kaminari-activerecord (= 1.2.2)
+      kaminari-core (= 1.2.2)
+    kaminari-actionview (1.2.2)
       actionview
-      kaminari-core (= 1.2.1)
-    kaminari-activerecord (1.2.1)
+      kaminari-core (= 1.2.2)
+    kaminari-activerecord (1.2.2)
       activerecord
-      kaminari-core (= 1.2.1)
-    kaminari-core (1.2.1)
+      kaminari-core (= 1.2.2)
+    kaminari-core (1.2.2)
     kramdown (2.3.1)
       rexml
     launchy (2.5.0)
       addressable (~> 2.7)
     letter_opener (1.7.0)
       launchy (~> 2.2)
-    loofah (2.10.0)
+    loofah (2.13.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -176,12 +176,12 @@ GEM
     marcel (1.0.1)
     matrix (0.4.2)
     method_source (1.0.0)
-    mime-types (3.3.1)
+    mime-types (3.5.0)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2021.0704)
-    mini_mime (1.1.2)
-    mini_portile2 (2.7.1)
-    minitest (5.14.4)
+    mime-types-data (3.2023.0808)
+    mini_mime (1.1.0)
+    mini_portile2 (2.6.1)
+    minitest (5.15.0)
     momentjs-rails (2.20.1)
       railties (>= 3.1)
     multi_json (1.15.0)
@@ -198,7 +198,7 @@ GEM
     parallel (1.20.1)
     parser (3.0.2.0)
       ast (~> 2.4.1)
-    pg (1.2.3)
+    pg (1.4.5)
     poltergeist (1.18.1)
       capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
@@ -235,13 +235,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.2)
       loofah (~> 2.3)
-    rails_12factor (0.0.3)
-      rails_serve_static_assets
-      rails_stdout_logging
-    rails_serve_static_assets (0.0.5)
-    rails_stdout_logging (0.0.5)
     railties (5.2.6)
       actionpack (= 5.2.6)
       activesupport (= 5.2.6)
@@ -386,7 +381,6 @@ DEPENDENCIES
   puma
   rails (~> 5.1)
   rails-controller-testing
-  rails_12factor
   rspec-rails
   rubocop
   ruby_parser
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 7168383..23e2853 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -10,7 +10,7 @@ DanBarberPhoto::Application.configure do
   config.eager_load = false
 
   # Show full error reports and disable caching
-  config.consider_all_requests_local       = true
+  config.consider_all_requests_local = true
   config.action_controller.perform_caching = false
 
   # Don't care if the mailer can't send
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 622942a..7c535b7 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -11,7 +11,7 @@ DanBarberPhoto::Application.configure do
   config.eager_load = true
 
   # Full error reports are disabled and caching is turned on
-  config.consider_all_requests_local       = false
+  config.consider_all_requests_local = false
   config.action_controller.perform_caching = true
 
   # Disable Rails's static asset server (Apache or nginx will already do this)
@@ -71,7 +71,7 @@ DanBarberPhoto::Application.configure do
     authentication: :plain,
     user_name: ENV["SENDGRID_USERNAME"],
     password: ENV["SENDGRID_PASSWORD"],
-    domain: "heroku.com",
+    domain: "heroku.com"
   }
   ActionMailer::Base.delivery_method = :smtp