diff --git a/www-apps/nanoc/nanoc-4.13.5.ebuild b/www-apps/nanoc/nanoc-4.13.5.ebuild
index 07e97842bc962..66c2f8b700fd5 100644
--- a/www-apps/nanoc/nanoc-4.13.5.ebuild
+++ b/www-apps/nanoc/nanoc-4.13.5.ebuild
@@ -48,6 +48,7 @@ ruby_add_bdepend "test? (
 	>=dev-ruby/mocha-0.13
 	dev-ruby/minitest
 	dev-ruby/mustache
+	>=dev-ruby/nokogiri-1.12
 	dev-ruby/pry
 	dev-ruby/rdoc
 	>=dev-ruby/rouge-3.5.1:2