diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index 365fc9fe..04073b01 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -227,7 +227,7 @@ http {
             add_header Cache-Control "public, max-age=604800";
         }
 
-        location ~ "\.(css|js|mjs)$" {
+        location ~ "\.(css|js|map|mjs)$" {
             include snippets/security-headers.conf;
             add_header Cross-Origin-Resource-Policy "same-origin" always;
             add_header Cache-Control "public, max-age=31536000, immutable";