diff --git a/lib/oto/build/build_dart.dart b/lib/oto/build/build_dart.dart
index 436a577..3773410 100644
--- a/lib/oto/build/build_dart.dart
+++ b/lib/oto/build/build_dart.dart
@@ -26,6 +26,7 @@ class BuildDart implements Command {
     var shell = StringBuffer();
     shell.write('cd $targetPath');
     shell.write(' && flutter clean');
+    shell.write(' && flutter pub upgrade --major-versions');
     shell.write(' && flutter packages upgrade');
     shell.write(' && flutter pub get');
     if (data.executeBuildRunner == null ? true : data.executeBuildRunner!) {