diff --git a/deploy/nginx.conf b/deploy/nginx.conf
index b2c1bdb2..cc40a9a0 100644
--- a/deploy/nginx.conf
+++ b/deploy/nginx.conf
@@ -79,6 +79,7 @@ server {
     # Serve JS files from the output directory. We use a regular expression
     # match to ensure that we only serve JS files.
     location ~ ^/output/(.+\.js)$ {
+      add_header Access-Control-Allow-Origin *;
       alias /var/www/trypurescript/staging/.psci_modules/node_modules/$1;
     }
 }