diff --git a/hostsidetests/harmfulappwarning/testapp/src/android/harmfulappwarning/testapp/HarmfulAppWarningDeviceTest.java b/hostsidetests/harmfulappwarning/testapp/src/android/harmfulappwarning/testapp/HarmfulAppWarningDeviceTest.java
index 88a3179..70f694d 100644
--- a/hostsidetests/harmfulappwarning/testapp/src/android/harmfulappwarning/testapp/HarmfulAppWarningDeviceTest.java
+++ b/hostsidetests/harmfulappwarning/testapp/src/android/harmfulappwarning/testapp/HarmfulAppWarningDeviceTest.java
@@ -45,7 +45,7 @@
 @RunWith(AndroidJUnit4.class)
 public class HarmfulAppWarningDeviceTest {
 
-    private static final long TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(1);
+    private static final long TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(3);
 
     private static final String ACTION_ACTIVITY_STARTED =
             "android.harmfulappwarning.sampleapp.ACTIVITY_STARTED";