diff --git a/src/background/repositories/PersistentSettingRepository.ts b/src/background/repositories/PersistentSettingRepository.ts
index 18476fd..ff882a5 100644
--- a/src/background/repositories/PersistentSettingRepository.ts
+++ b/src/background/repositories/PersistentSettingRepository.ts
@@ -6,7 +6,7 @@ export default class SettingRepository {
     if (!settings) {
       return null;
     }
-    return SettingData.valueOf(settings);
+    return SettingData.valueOf(settings as any);
   }
 }
 
diff --git a/src/settings/storage.ts b/src/settings/storage.ts
index 748b9ab..c0005b7 100644
--- a/src/settings/storage.ts
+++ b/src/settings/storage.ts
@@ -5,7 +5,7 @@ export const load = async(): Promise<SettingData> => {
   if (!settings) {
     return DefaultSettingData;
   }
-  return SettingData.valueOf(settings);
+  return SettingData.valueOf(settings as any);
 };
 
 export const save = (data: SettingData) => {