diff --git a/desktop/flipper-ui-core/src/startFlipperDesktop.tsx b/desktop/flipper-ui-core/src/startFlipperDesktop.tsx
index 4db34d4ce..9f3f2c082 100644
--- a/desktop/flipper-ui-core/src/startFlipperDesktop.tsx
+++ b/desktop/flipper-ui-core/src/startFlipperDesktop.tsx
@@ -154,6 +154,7 @@ function init(flipperServer: FlipperServer) {
     // Make sure process state is set before dispatchers run
     await dispatcher(store, logger);
     getRenderHostInstance().sendIpcEvent('storeRehydrated');
+    uiPerfTracker.track('ui-perf-store-rehydrated');
   });
 
   setPersistor(persistor);
diff --git a/desktop/flipper-ui-core/src/utils/UIPerfTracker.tsx b/desktop/flipper-ui-core/src/utils/UIPerfTracker.tsx
index 5befefae3..aa02ed792 100644
--- a/desktop/flipper-ui-core/src/utils/UIPerfTracker.tsx
+++ b/desktop/flipper-ui-core/src/utils/UIPerfTracker.tsx
@@ -9,7 +9,9 @@
 
 import {getLogger} from 'flipper-common';
 
-type UIPerfEvents = 'ui-perf-everything-finally-loaded-jeeeez';
+type UIPerfEvents =
+  | 'ui-perf-store-rehydrated'
+  | 'ui-perf-everything-finally-loaded-jeeeez';
 
 class UIPerfTracker {
   private t0!: number;