diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 2656a28d62..3ba2ca1980 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -7,7 +7,8 @@
 export interface SelectOption {
   value: string | number | boolean | null
   label: string
-  [key: string]: any // Support extra properties for custom templates
+  disabled?: boolean
+  [key: string]: string | number | boolean | null | undefined
 }
 
 export interface BasePaginationResponse<T> {