diff --git a/actionview/lib/action_view/helpers/tag_helper.rb b/actionview/lib/action_view/helpers/tag_helper.rb
index b203857..f09595d 100644
--- a/actionview/lib/action_view/helpers/tag_helper.rb
+++ b/actionview/lib/action_view/helpers/tag_helper.rb
@@ -169,7 +169,7 @@ def tag_option(key, value, escape)
         def tag_option(key, value, escape)
           value = value.join(" ") if value.is_a?(Array)
           value = ERB::Util.h(value) if escape
-          %(#{key}="#{value}")
+          %(#{key}="#{value.gsub(/"/, '"'.freeze)}")
         end
     end
   end