diff --git a/src/backtest.ts b/src/backtest.ts
index 2495643..6f7e077 100644
--- a/src/backtest.ts
+++ b/src/backtest.ts
@@ -74,7 +74,7 @@ export class Backtest {
 
     for await (const context of iterator) {
       broker.next();
-      strategy.next(context as Context);
+      await strategy.next(context as Context);
     }
     broker.trades.forEach(t => t.close());
     broker.last();