diff --git a/.env.preview b/.env.preview
index bd4ac0e1a..2c46dca3b 100644
--- a/.env.preview
+++ b/.env.preview
@@ -1 +1,4 @@
 VITE_ZONE_CREATION_FLOW=enabled
+# The following are templating placeholders for the index.html file. They’re going to be replaced using server-side templating when serving the GUI application in production.
+VITE_BASE_GUI_PATH=/gui
+VITE_KUMA_CONFIG='{"baseGuiPath":"/gui","apiUrl":"http://localhost:5681","version":"2.4.0","product":"Kuma","mode":"global","environment":"universal","storeType":"postgres","apiReadOnly":false}'