diff --git a/band-lineup-display/preload.js b/band-lineup-display/preload.js
index 627a24f..f999761 100644
--- a/band-lineup-display/preload.js
+++ b/band-lineup-display/preload.js
@@ -14,6 +14,7 @@ contextBridge.exposeInMainWorld('lineup', {
   pcoServiceTypes: () => ipcRenderer.invoke('pco-service-types'),
   pcoPositionOptions: (serviceTypeId) => ipcRenderer.invoke('pco-position-options', serviceTypeId),
   pcoSyncUpcomingPlan: (payload) => ipcRenderer.invoke('pco-sync-upcoming-plan', payload),
+  pcoTestBirthdays: () => ipcRenderer.invoke('pco-test-birthdays'),
   onMenuAddPhotos: (cb) => {
     ipcRenderer.on('menu-add-photos', () => cb());
   },