diff --git a/src/lib/password.ts b/src/lib/password.ts
index dd8c64c..4669506 100644
--- a/src/lib/password.ts
+++ b/src/lib/password.ts
@@ -31,7 +31,7 @@ export async function lock() {
 }
 
 export async function isLocked() {
-  return await storageManager.get('locked', false)
+  return await storageManager.get('locked', { defaultValue: false })
 }
 
 export async function unlock(password: string) {
diff --git a/src/lib/storage.ts b/src/lib/storage.ts
index 17606f2..9452eec 100644
--- a/src/lib/storage.ts
+++ b/src/lib/storage.ts
@@ -42,7 +42,7 @@ export async function deleteStorage(key: string): Promise<void> {
 }
 
 type Storage = {
-  get: (key: string, defaultValue?: any) => Promise<any>
+  get: (key: string, option?: { defaultValue?: unknown; isParse?: boolean }) => Promise<any>
   set: (key: string, value: any) => Promise<void>
   delete: (key: string) => Promise<void>
 }