diff --git a/pkgs/servers/home-assistant/custom-lovelace-modules/zigbee2mqtt-networkmap/update.sh b/pkgs/servers/home-assistant/custom-lovelace-modules/zigbee2mqtt-networkmap/update.sh
index b2675bc5c3d9..6370cc85efcc 100755
--- a/pkgs/servers/home-assistant/custom-lovelace-modules/zigbee2mqtt-networkmap/update.sh
+++ b/pkgs/servers/home-assistant/custom-lovelace-modules/zigbee2mqtt-networkmap/update.sh
@@ -6,4 +6,8 @@ set -xe
 dirname="$(dirname "$0")"
 
 # nix-update picks the wrong file `pkgs/development/tools/yarn2nix-moretea/yarn2nix/default.nix`
-nix-update --override-filename "$dirname/default.nix" home-assistant-custom-lovelace-modules.zigbee2mqtt-networkmap
+nix-update --override-filename "$dirname/package.nix" home-assistant-custom-lovelace-modules.zigbee2mqtt-networkmap
+
+# update package.json
+source=$(nix-build -A home-assistant-custom-lovelace-modules.zigbee2mqtt-networkmap.src)
+cp "$source/package.json" "$dirname/package.json"