diff --git a/src/chart/sync_tooltip.tsx b/src/chart/sync_tooltip.tsx
index a939b38fcb81306c6cfbda6d6cd578371123a2d1..847222a9fe39bf98c64a8cbad8909f2392baf476 100644
--- a/src/chart/sync_tooltip.tsx
+++ b/src/chart/sync_tooltip.tsx
@@ -3,9 +3,11 @@ import { PlotEvent } from '@ant-design/plots'
 
 const SyncTooltipContext = createContext<StandaloneEventBus | null>(null)
 
-interface SyncTooltipProps {}
+interface SyncTooltipProps {
+  children?: React.ReactNode
+}
 
-export const SyncTooltip: React.FC<SyncTooltipProps> = ({ children }) => {
+export const SyncTooltip: React.FC<React.PropsWithChildren<SyncTooltipProps>> = ({ children }) => {
   return (
     <SyncTooltipContext.Provider value={new StandaloneEventBus()}>
       {children}