diff --git a/comma.gemspec b/comma.gemspec
index 784c2ab..7d950ed 100644
--- a/comma.gemspec
+++ b/comma.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
 
   s.licenses = ['MIT']
 
-  s.add_dependency 'activesupport', ['>= 4.2.0', '< 6.1']
+  s.add_dependency 'activesupport', ['>= 4.2.0', '< 9']
 
   s.add_development_dependency 'appraisal', ['~> 1.0.0']
   s.add_development_dependency 'rake', ['~> 10.5.0']
diff --git a/lib/comma/generator.rb b/lib/comma/generator.rb
index 7093871..e2f9134 100644
--- a/lib/comma/generator.rb
+++ b/lib/comma/generator.rb
@@ -31,7 +31,7 @@ def run(iterator_method)
     def append_csv(csv, iterator_method)
       return '' if @instance.empty?
 
-      csv << @instance.first.to_comma_headers(@style, @globals) unless
+      csv << @instance.take(1).first.to_comma_headers(@style, @globals) unless
         @options.key?(:write_headers) && !@options[:write_headers]
       @instance.send(iterator_method) do |object|
         csv << object.to_comma(@style, @sanitized, @globals)
diff --git a/lib/comma/sanitized_extractor.rb b/lib/comma/sanitized_extractor.rb
index df0d3f7..41a6d4e 100644
--- a/lib/comma/sanitized_extractor.rb
+++ b/lib/comma/sanitized_extractor.rb
@@ -46,7 +46,12 @@ def starts_with_special_characters(result)
     end
 
     def sanitize_result(result)
-      result = result.to_s
+      if result.is_a?(ActiveSupport::TimeWithZone)
+        result = result.to_fs
+      else
+        result = result.to_s
+      end
+
       if starts_with_special_characters(result)
         if check_for_only_digits(result)
           result
diff --git a/lib/comma/version.rb b/lib/comma/version.rb
index 3200635..8f7d736 100644
--- a/lib/comma/version.rb
+++ b/lib/comma/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Comma
-  VERSION = '4.3.2'
+  VERSION = '4.3.3'
 end