diff --git a/Gemfile.lock b/Gemfile.lock
index b7001d5..b1a747b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,12 +1,12 @@
 PATH
   remote: .
   specs:
-    papercraft (1.2)
+    papercraft (1.3)
       escape_utils (~> 1.3.0)
       kramdown (~> 2.5.1)
       kramdown-parser-gfm (~> 1.1.0)
       rouge (~> 4.5.1)
-      sirop (~> 0.4)
+      sirop (~> 0.5)
 
 GEM
   remote: https://rubygems.org/
@@ -22,7 +22,7 @@ GEM
     prism (0.27.0)
     rexml (3.4.0)
     rouge (4.5.1)
-    sirop (0.4)
+    sirop (0.5)
       prism (~> 0.27.0)
     tilt (2.2.0)
 
diff --git a/lib/papercraft.rb b/lib/papercraft.rb
index 55ebef4..7363fea 100644
--- a/lib/papercraft.rb
+++ b/lib/papercraft.rb
@@ -1,13 +1,8 @@
 # frozen_string_literal: true
 
-require 'kramdown'
-require 'rouge'
-require 'kramdown-parser-gfm'
-
 require_relative 'papercraft/template'
 require_relative 'papercraft/renderer'
-require_relative 'papercraft/compiler'
-
+# require_relative 'papercraft/compiler'
 
 # Papercraft is a composable templating library
 module Papercraft
@@ -82,6 +77,11 @@ def json(o = nil, mime_type: nil, &template)
     # @param opts [Hash] Kramdown option overrides
     # @return [String] HTML
     def markdown(markdown, **opts)
+      # require relevant deps on use
+      require 'kramdown'
+      require 'rouge'
+      require 'kramdown-parser-gfm'
+      
       opts = default_kramdown_options.merge(opts)
       Kramdown::Document.new(markdown, **opts).to_html
     end
diff --git a/papercraft.gemspec b/papercraft.gemspec
index 1eddc7a..a0c6dff 100644
--- a/papercraft.gemspec
+++ b/papercraft.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
   s.required_ruby_version = '>= 3.2'
 
-  s.add_runtime_dependency      'sirop',                '~>0.4'
+  s.add_runtime_dependency      'sirop',                '~>0.5'
   s.add_runtime_dependency      'escape_utils',         '~>1.3.0'
   s.add_runtime_dependency      'kramdown',             '~>2.5.1'
   s.add_runtime_dependency      'rouge',                '~>4.5.1'
diff --git a/test/fixtures/compiler/defer.html b/test/fixtures/compiler/defer.html
new file mode 100644
index 0000000..6e8c77a
--- /dev/null
+++ b/test/fixtures/compiler/defer.html
@@ -0,0 +1 @@
+<div><h1>bar</h1></div>
\ No newline at end of file
diff --git a/test/fixtures/compiler/defer_compiled.rb b/test/fixtures/compiler/defer_compiled.rb
new file mode 100644
index 0000000..3b4d9d5
--- /dev/null
+++ b/test/fixtures/compiler/defer_compiled.rb
@@ -0,0 +1,7 @@
+->(__buffer__) {; __parts__ = [__buffer__.dup]; __buffer__.clear
+  __parts__ << "<div>";__parts__ << ->(__b__) {
+      __b__ << "<h1>#{CGI.escapeHTML((@foo).to_s)}</h1>"
+    }
+    @foo = 'bar'
+  __parts__ << "</div>";__parts__.each { |p| p.is_a?(Proc) ? p.(__buffer__) : (__buffer__ << p) }
+}
diff --git a/test/fixtures/compiler/defer_source.rb b/test/fixtures/compiler/defer_source.rb
new file mode 100644
index 0000000..8c538aa
--- /dev/null
+++ b/test/fixtures/compiler/defer_source.rb
@@ -0,0 +1,8 @@
+->() {
+  div {
+    defer {
+      h1 @foo
+    }
+    @foo = 'bar'
+  }
+}
diff --git a/test/test_compiler.rb b/test/test_compiler.rb
index 6d0234e..fd4301e 100644
--- a/test/test_compiler.rb
+++ b/test/test_compiler.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require_relative './helper'
+require_relative '../lib/papercraft/compiler'
 
 class CompilerTest < Minitest::Test
   Dir["#{FIXTURES_PATH}/compiler/*_source.rb"].each do |fn|