diff --git a/lovelace/05_test.yaml b/lovelace/05_test.yaml
index 17e3918..cd49cc4 100644
--- a/lovelace/05_test.yaml
+++ b/lovelace/05_test.yaml
@@ -58,3 +58,5 @@ cards:
     line_width: 3
     points_per_hour: 1
     hours_to_show: 72
+
+  - type: custom:gui-sandbox
diff --git a/ui-lovelace.yaml b/ui-lovelace.yaml
index ef7d8af..417b448 100644
--- a/ui-lovelace.yaml
+++ b/ui-lovelace.yaml
@@ -4,6 +4,8 @@ custom_header:
   hide_help: true
   hide_unused: true
 resources:
+  - type: module
+    url: /hacsfiles/lovelace-gui-sandbox/gui-sandbox.js
   - type: module
     url: /hacsfiles/lovelace-swipe-navigation/swipe-navigation.js
   - type: module