diff --git a/pkg/smith/lib/configuration.dart b/pkg/smith/lib/configuration.dart
index 62dbee4..9fc946a 100644
--- a/pkg/smith/lib/configuration.dart
+++ b/pkg/smith/lib/configuration.dart
@@ -656,6 +656,9 @@
         return const [
           Runtime.none,
           Runtime.chrome,
+          Runtime.edge,
+          Runtime.firefox,
+          Runtime.safari,
         ];
 
       case Compiler.dart2analyzer: