diff --git a/config/initializers/cors.rb b/config/initializers/cors.rb
index fe507da1c..4156714a9 100644
--- a/config/initializers/cors.rb
+++ b/config/initializers/cors.rb
@@ -19,6 +19,7 @@
   allow do
     origins ["https://explorer.nervos.org",
              "https://pudge.explorer.nervos.org",
+             "http://localhost:3000",
              /\Ahttps:\/\/ckb-explorer-.*-magickbase.vercel.app\z/] +
       ENV["PARTNER_DOMAINS"].to_s.split(",").map(&:strip).map { |x| x.start_with?("/") ? Regexp.new(x[1..-2]) : x }
     resource "*", headers: :any, methods: %i[get post put head options]