diff --git a/dockerfiles/nginx/proxito.conf.template b/dockerfiles/nginx/proxito.conf.template
index 23ce101087f..592872f2737 100644
--- a/dockerfiles/nginx/proxito.conf.template
+++ b/dockerfiles/nginx/proxito.conf.template
@@ -31,6 +31,7 @@ server {
     location /_/static/javascript/readthedocs-addons.js.map {
         proxy_pass https://raw.githubusercontent.com/readthedocs/addons/$NGINX_ADDONS_GITHUB_TAG/dist/readthedocs-addons.js.map;
         proxy_cache_valid 24h;
+        proxy_hide_header Content-Type;
         add_header Content-Type	"text/javascript; charset=utf-8" always;
     }