diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index 3dee7fb45..bd097f99c 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -14,3 +14,6 @@ Rails.application.config.assets.precompile << /\.(?:svg|eot|woff|ttf)\z/
 # application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
 # Rails.application.config.assets.precompile += %w( search.js )
 Rails.application.config.assets.precompile += %w( app.css compiled.min.js compiled.js )
+
+# zip library
+Rails.application.config.assets.precompile += %w( zip/zip.js zip/z-worker.js zip/inflate.js zip/deflate.js )