diff --git a/app_dart/lib/src/request_handlers/github/webhook_subscription.dart b/app_dart/lib/src/request_handlers/github/webhook_subscription.dart
index b17b3233d0..a00ab30579 100644
--- a/app_dart/lib/src/request_handlers/github/webhook_subscription.dart
+++ b/app_dart/lib/src/request_handlers/github/webhook_subscription.dart
@@ -313,7 +313,9 @@ class GithubWebhookSubscription extends SubscriptionHandler {
         filename.contains('.github/') ||
         filename.endsWith('.md') ||
         // Exempt paths.
-        filename.startsWith('dev/devicelab/lib/versions/gallery.dart');
+        filename.startsWith('dev/devicelab/lib/versions/gallery.dart') ||
+        filename.startsWith('shell/platform/embedder/tests') ||
+        filename.startsWith('shell/platform/embedder/fixtures');
   }
 
   /// Returns the set of labels applicable to a file in the framework repo.
diff --git a/app_dart/test/request_handlers/github/webhook_subscription_test.dart b/app_dart/test/request_handlers/github/webhook_subscription_test.dart
index 3ce473b11a..8439bab70c 100644
--- a/app_dart/test/request_handlers/github/webhook_subscription_test.dart
+++ b/app_dart/test/request_handlers/github/webhook_subscription_test.dart
@@ -889,9 +889,11 @@ void main() {
       final RepositorySlug slug = RepositorySlug('flutter', 'flutter');
 
       when(pullRequestsService.listFiles(slug, issueNumber)).thenAnswer(
-        (_) => Stream<PullRequestFile>.value(
+        (_) => Stream<PullRequestFile>.fromIterable(<PullRequestFile>[
           PullRequestFile()..filename = 'dev/devicelab/lib/versions/gallery.dart',
-        ),
+          PullRequestFile()..filename = 'shell/platform/embedder/tests/embedder_test_context.cc',
+          PullRequestFile()..filename = 'shell/platform/embedder/fixtures/main.dart',
+        ]),
       );
 
       when(issuesService.listCommentsByIssue(slug, issueNumber)).thenAnswer(