diff --git a/dev/devicelab/manifest.yaml b/dev/devicelab/manifest.yaml
index aed3b1a5363..ec1052b6f38 100644
--- a/dev/devicelab/manifest.yaml
+++ b/dev/devicelab/manifest.yaml
@@ -274,6 +274,7 @@ tasks:
       Measures the startup time of the Flutter Gallery app on iOS.
     stage: devicelab_ios
     required_agent_capabilities: ["has-ios-device"]
+    flaky: true
 
   complex_layout_ios__start_up:
     description: >