diff --git a/lib/main.dart b/lib/main.dart
index 838cd47f..a1e088e0 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,7 +1,6 @@
 library carp_study_app;
 
 import 'dart:async';
-import 'dart:isolate';
 import 'dart:math';
 import 'dart:convert';
 import 'dart:ui' as ui;