diff --git a/jekyll.gemspec b/jekyll.gemspec
index b78a6e13..6e2035c6 100644
--- a/jekyll.gemspec
+++ b/jekyll.gemspec
@@ -109,6 +109,7 @@ Gem::Specification.new do |s|
     lib/jekyll/generator.rb
     lib/jekyll/generators/pagination.rb
     lib/jekyll/layout.rb
+    lib/jekyll/layout_reader.rb
     lib/jekyll/mime.types
     lib/jekyll/page.rb
     lib/jekyll/plugin.rb
@@ -232,6 +233,7 @@ Gem::Specification.new do |s|
     test/source/_config.dev.toml
     test/source/_data/languages.yml
     test/source/_data/members.yaml
+    test/source/_data/products.yml
     test/source/_includes/include.html
     test/source/_includes/params.html
     test/source/_includes/sig.markdown
@@ -288,6 +290,9 @@ Gem::Specification.new do |s|
     test/source/products.yml
     test/source/properties.html
     test/source/sitemap.xml
+    test/source/symlink-test/_data
+    test/source/symlink-test/symlinked-dir
+    test/source/symlink-test/symlinked-file
     test/source/unpublished.html
     test/source/win/_posts/2009-05-24-yaml-linebreak.markdown
     test/source/z_category/_posts/2008-9-23-categories.textile
@@ -302,6 +307,7 @@ Gem::Specification.new do |s|
     test/test_filters.rb
     test/test_generated_site.rb
     test/test_kramdown.rb
+    test/test_layout_reader.rb
     test/test_new_command.rb
     test/test_page.rb
     test/test_pager.rb