diff --git a/web/app/components/app/configuration/config-var/index.tsx b/web/app/components/app/configuration/config-var/index.tsx
index 994f53b1d6..8c4c57b934 100644
--- a/web/app/components/app/configuration/config-var/index.tsx
+++ b/web/app/components/app/configuration/config-var/index.tsx
@@ -34,7 +34,7 @@ type ExternalDataToolParams = {
   type: string
   index: number
   name: string
-  config?: Record<string, unknown>
+  config?: PromptVariable['config']
   icon?: string
   icon_background?: string
 }