Index: lib/redcloth3.rb
===================================================================
--- lib/redcloth3.rb	(revision 2657)
+++ lib/redcloth3.rb	(working copy)
@@ -1168,7 +1168,7 @@
         end
     end
     
-    ALLOWED_TAGS = %w(redpre pre code notextile)
+    ALLOWED_TAGS = %w(redpre pre code notextile div)
     
     def escape_html_tags(text)
       text.gsub!(%r{<(\/?([!\w]+)[^<>\n]*)(>?)}) {|m| ALLOWED_TAGS.include?($2) ? "<#{$1}#{$3}" : "&lt;#{$1}#{'&gt;' unless $3.blank?}" }