diff --git a/reverse-proxy/loc-includes/cors.conf b/reverse-proxy/loc-includes/cors.conf
index 84f1c78c8..f58a193df 100644
--- a/reverse-proxy/loc-includes/cors.conf
+++ b/reverse-proxy/loc-includes/cors.conf
@@ -2,6 +2,11 @@
 #
 # Wide-open CORS config for nginx
 #
+
+# TEMP: override Last-Modified for Cloudflare
+# https://support.cloudflare.com/hc/en-us/articles/200308847-Using-cross-origin-resource-sharing-CORS-with-Cloudflare
+add_header Last-Modified $date_gmt;
+
 if ($request_method = 'OPTIONS') {
    add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';