diff --git a/Appraisals b/Appraisals
index 0e811ee..df232a4 100644
--- a/Appraisals
+++ b/Appraisals
@@ -17,3 +17,7 @@ end
 appraise "rails-6.1" do
   gem "activesupport", "~> 6.1.0"
 end
+
+appraise "rails-8.0" do
+  gem "activesupport", "~> 8.0.0.1"
+end
diff --git a/gemfiles/rails_5.0.gemfile.lock b/gemfiles/rails_5.0.gemfile.lock
index 8d2faa5..7ec8d0c 100644
--- a/gemfiles/rails_5.0.gemfile.lock
+++ b/gemfiles/rails_5.0.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    qbxml (0.4.0)
+    qbxml (0.5.0)
       activesupport (>= 5.0.0)
       builder (~> 3.0)
       nokogiri (~> 1.5)
@@ -14,43 +14,45 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    appraisal (2.3.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
-    builder (3.2.4)
+    builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.7)
-    diff-lcs (1.4.4)
-    i18n (1.8.5)
+    concurrent-ruby (1.3.4)
+    diff-lcs (1.5.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    method_source (0.9.2)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-nav (0.3.0)
-      pry (>= 0.9.10, < 0.13.0)
-    rake (13.0.1)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.0)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.0)
+    method_source (1.1.0)
+    mini_portile2 (2.8.8)
+    minitest (5.25.4)
+    nokogiri (1.17.1)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-nav (1.0.0)
+      pry (>= 0.9.10, < 0.15)
+    racc (1.8.1)
+    rake (13.2.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.0)
-    thor (1.0.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    thor (1.3.2)
     thread_safe (0.3.6)
-    tzinfo (1.2.8)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
 
 PLATFORMS
diff --git a/gemfiles/rails_5.1.gemfile.lock b/gemfiles/rails_5.1.gemfile.lock
index 3e74d53..259368d 100644
--- a/gemfiles/rails_5.1.gemfile.lock
+++ b/gemfiles/rails_5.1.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    qbxml (0.4.0)
+    qbxml (0.5.0)
       activesupport (>= 5.0.0)
       builder (~> 3.0)
       nokogiri (~> 1.5)
@@ -14,43 +14,45 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    appraisal (2.3.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
-    builder (3.2.4)
+    builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.7)
-    diff-lcs (1.4.4)
-    i18n (1.8.5)
+    concurrent-ruby (1.3.4)
+    diff-lcs (1.5.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    method_source (0.9.2)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-nav (0.3.0)
-      pry (>= 0.9.10, < 0.13.0)
-    rake (13.0.1)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.0)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.0)
+    method_source (1.1.0)
+    mini_portile2 (2.8.8)
+    minitest (5.25.4)
+    nokogiri (1.17.1)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-nav (1.0.0)
+      pry (>= 0.9.10, < 0.15)
+    racc (1.8.1)
+    rake (13.2.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.0)
-    thor (1.0.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    thor (1.3.2)
     thread_safe (0.3.6)
-    tzinfo (1.2.8)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
 
 PLATFORMS
diff --git a/gemfiles/rails_5.2.gemfile.lock b/gemfiles/rails_5.2.gemfile.lock
index 86428f8..900c5c6 100644
--- a/gemfiles/rails_5.2.gemfile.lock
+++ b/gemfiles/rails_5.2.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    qbxml (0.4.0)
+    qbxml (0.5.0)
       activesupport (>= 5.0.0)
       builder (~> 3.0)
       nokogiri (~> 1.5)
@@ -9,48 +9,50 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.4)
+    activesupport (5.2.8.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    appraisal (2.3.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
-    builder (3.2.4)
+    builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.7)
-    diff-lcs (1.4.4)
-    i18n (1.8.5)
+    concurrent-ruby (1.3.4)
+    diff-lcs (1.5.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    method_source (0.9.2)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-nav (0.3.0)
-      pry (>= 0.9.10, < 0.13.0)
-    rake (13.0.1)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.0)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.0)
+    method_source (1.1.0)
+    mini_portile2 (2.8.8)
+    minitest (5.25.4)
+    nokogiri (1.17.1)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-nav (1.0.0)
+      pry (>= 0.9.10, < 0.15)
+    racc (1.8.1)
+    rake (13.2.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.0)
-    thor (1.0.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    thor (1.3.2)
     thread_safe (0.3.6)
-    tzinfo (1.2.8)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
 
 PLATFORMS
diff --git a/gemfiles/rails_6.0.gemfile.lock b/gemfiles/rails_6.0.gemfile.lock
index 128e653..9e17d8b 100644
--- a/gemfiles/rails_6.0.gemfile.lock
+++ b/gemfiles/rails_6.0.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    qbxml (0.4.0)
+    qbxml (0.5.0)
       activesupport (>= 5.0.0)
       builder (~> 3.0)
       nokogiri (~> 1.5)
@@ -9,51 +9,53 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.3.4)
+    activesupport (6.0.6.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    appraisal (2.3.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
-    builder (3.2.4)
+    builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.7)
-    diff-lcs (1.4.4)
-    i18n (1.8.5)
+    concurrent-ruby (1.3.4)
+    diff-lcs (1.5.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    method_source (0.9.2)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-nav (0.3.0)
-      pry (>= 0.9.10, < 0.13.0)
-    rake (13.0.1)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.0)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.0)
+    method_source (1.1.0)
+    mini_portile2 (2.8.8)
+    minitest (5.25.4)
+    nokogiri (1.17.1)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-nav (1.0.0)
+      pry (>= 0.9.10, < 0.15)
+    racc (1.8.1)
+    rake (13.2.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.0)
-    thor (1.0.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    thor (1.3.2)
     thread_safe (0.3.6)
-    tzinfo (1.2.8)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
-    zeitwerk (2.4.2)
+    zeitwerk (2.7.1)
 
 PLATFORMS
   ruby
diff --git a/gemfiles/rails_6.1.gemfile.lock b/gemfiles/rails_6.1.gemfile.lock
index b11bdaa..fd13df6 100644
--- a/gemfiles/rails_6.1.gemfile.lock
+++ b/gemfiles/rails_6.1.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ..
   specs:
-    qbxml (0.4.0)
+    qbxml (0.5.0)
       activesupport (>= 5.0.0)
       builder (~> 3.0)
       nokogiri (~> 1.5)
@@ -9,50 +9,52 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.1.0)
+    activesupport (6.1.7.10)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
-    appraisal (2.3.0)
+    appraisal (2.5.0)
       bundler
       rake
       thor (>= 0.14.0)
-    builder (3.2.4)
+    builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.1.7)
-    diff-lcs (1.4.4)
-    i18n (1.8.5)
+    concurrent-ruby (1.3.4)
+    diff-lcs (1.5.1)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    method_source (0.9.2)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-nav (0.3.0)
-      pry (>= 0.9.10, < 0.13.0)
-    rake (13.0.1)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.0)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.0)
+    method_source (1.1.0)
+    mini_portile2 (2.8.8)
+    minitest (5.25.4)
+    nokogiri (1.17.1)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-nav (1.0.0)
+      pry (>= 0.9.10, < 0.15)
+    racc (1.8.1)
+    rake (13.2.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.0)
-    thor (1.0.1)
-    tzinfo (2.0.3)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    thor (1.3.2)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    zeitwerk (2.4.2)
+    zeitwerk (2.7.1)
 
 PLATFORMS
   ruby
diff --git a/gemfiles/rails_8.0.gemfile b/gemfiles/rails_8.0.gemfile
new file mode 100644
index 0000000..c549f2d
--- /dev/null
+++ b/gemfiles/rails_8.0.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activesupport", "~> 8.0.0.1"
+
+gemspec path: "../"
diff --git a/gemfiles/rails_8.0.gemfile.lock b/gemfiles/rails_8.0.gemfile.lock
new file mode 100644
index 0000000..20b6d00
--- /dev/null
+++ b/gemfiles/rails_8.0.gemfile.lock
@@ -0,0 +1,99 @@
+PATH
+  remote: ..
+  specs:
+    qbxml (0.5.0)
+      activesupport (>= 5.0.0)
+      builder (~> 3.0)
+      nokogiri (~> 1.5)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activesupport (8.0.0.1)
+      base64
+      benchmark (>= 0.3)
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
+      i18n (>= 1.6, < 2)
+      logger (>= 1.4.2)
+      minitest (>= 5.1)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
+    appraisal (2.5.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    base64 (0.2.0)
+    benchmark (0.4.0)
+    bigdecimal (3.1.8)
+    builder (3.3.0)
+    coderay (1.1.3)
+    concurrent-ruby (1.3.4)
+    connection_pool (2.4.1)
+    diff-lcs (1.5.1)
+    drb (2.2.1)
+    i18n (1.14.6)
+      concurrent-ruby (~> 1.0)
+    logger (1.6.2)
+    method_source (1.1.0)
+    minitest (5.25.4)
+    nokogiri (1.17.1-aarch64-linux)
+      racc (~> 1.4)
+    nokogiri (1.17.1-arm-linux)
+      racc (~> 1.4)
+    nokogiri (1.17.1-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.17.1-x86-linux)
+      racc (~> 1.4)
+    nokogiri (1.17.1-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.17.1-x86_64-linux)
+      racc (~> 1.4)
+    pry (0.14.2)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    pry-nav (1.0.0)
+      pry (>= 0.9.10, < 0.15)
+    racc (1.8.1)
+    rake (13.2.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    securerandom (0.4.0)
+    thor (1.3.2)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    uri (1.0.2)
+
+PLATFORMS
+  aarch64-linux
+  arm-linux
+  arm64-darwin
+  x86-linux
+  x86_64-darwin
+  x86_64-linux
+
+DEPENDENCIES
+  activesupport (~> 8.0.0.1)
+  appraisal
+  pry
+  pry-nav
+  qbxml!
+  rake
+  rspec
+
+BUNDLED WITH
+   2.5.22
diff --git a/lib/qbxml.rb b/lib/qbxml.rb
index 1974cf4..ede64e6 100644
--- a/lib/qbxml.rb
+++ b/lib/qbxml.rb
@@ -3,6 +3,7 @@
 require 'nokogiri'
 require 'active_support/builder'
 require 'active_support/core_ext/string'
+require 'active_support/core_ext/object/blank'
 
 class Qbxml; end
 
diff --git a/lib/qbxml/types.rb b/lib/qbxml/types.rb
index aa13339..6843c56 100644
--- a/lib/qbxml/types.rb
+++ b/lib/qbxml/types.rb
@@ -1,3 +1,5 @@
+require 'bigdecimal'
+
 module Qbxml::Types
 
   XML_DIRECTIVES = {
diff --git a/lib/qbxml/version.rb b/lib/qbxml/version.rb
index 884f1a6..2bf9cf1 100644
--- a/lib/qbxml/version.rb
+++ b/lib/qbxml/version.rb
@@ -1,3 +1,3 @@
 class Qbxml
-  VERSION = "0.4.0"
+  VERSION = "0.5.0"
 end