diff --git a/src/storage/types.ts b/src/storage/types.ts
index 9219ca6..5d6f172 100644
--- a/src/storage/types.ts
+++ b/src/storage/types.ts
@@ -28,6 +28,7 @@ export type PackageInfo = {
 
 export type PackagesRepository = {
     getPackage(
+        this: void,
         carrier: CarrierType,
         trackingNumber: string,
     ): Promise<RowInfo<PackageInfo>>;