diff --git a/test/webserver.mjs b/test/webserver.mjs
index 7df0ca4dc3889..d597aa2512d7d 100644
--- a/test/webserver.mjs
+++ b/test/webserver.mjs
@@ -14,6 +14,9 @@
  * limitations under the License.
  */
 
+// PLEASE NOTE: This code is intended for development purposes only and
+//              should NOT be used in production environments.
+
 import fs from "fs";
 import fsPromises from "fs/promises";
 import http from "http";