diff --git a/README.md b/README.md
index 5b7e1d4..c22d8b2 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@ activate :minify_html do |html|
   html.remove_https_protocol      = false  # Remove HTTPS protocol
   html.preserve_line_breaks       = false  # Preserve line breaks
   html.simple_boolean_attributes  = true   # Use simple boolean attributes
+  html.preserve_patterns          = nil    # Patterns to preserve
 end
 ```
 
diff --git a/lib/middleman-minify-html/extension.rb b/lib/middleman-minify-html/extension.rb
index 34e01f0..e2f24a4 100644
--- a/lib/middleman-minify-html/extension.rb
+++ b/lib/middleman-minify-html/extension.rb
@@ -15,6 +15,7 @@ class MinifyHtmlExtension < Extension
     option :remove_https_protocol, false, 'Remove HTTPS protocol'
     option :preserve_line_breaks, false, 'Preserve line breaks'
     option :simple_boolean_attributes, true, 'Use simple boolean attributes'
+    option :preserve_patterns, nil, 'Patterns to preserve'
 
     def initialize(*)
       super