diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index f1ae783c..2575a07d 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -229,7 +229,12 @@ http {
             add_header Cache-Control "public, max-age=604800";
         }
 
-        location ~ "\.(css|js|mjs|svg)$" {
+        location ~ "\.css$" {
+            include snippets/security-headers.conf;
+            add_header Cache-Control "public, max-age=31536000, immutable";
+        }
+
+        location ~ "\.(js|mjs|svg)$" {
             include snippets/security-headers.conf;
             add_header Cache-Control "public, max-age=31536000";
         }