diff --git a/game/ver-mac/src/dialect.swift b/game/ver-mac/src/dialect.swift
index 98b4ee9..7a71b2c 100644
--- a/game/ver-mac/src/dialect.swift
+++ b/game/ver-mac/src/dialect.swift
@@ -178,6 +178,7 @@ public struct RootContext: DialectContext {
     }
 }
 
+@MainActor
 public func rootSet(
     _ key: String,
     _ value: Any