diff --git a/src/middleware/persist.ts b/src/middleware/persist.ts
index 3cb238ed24..519c26977d 100644
--- a/src/middleware/persist.ts
+++ b/src/middleware/persist.ts
@@ -6,7 +6,7 @@ export interface StateStorage {
   removeItem: (name: string) => void | Promise<void>
 }
 
-type StorageValue<S> = {
+export type StorageValue<S> = {
   state: S
   version?: number
 }