diff --git a/src/pjson.ts b/src/pjson.ts
index c28eb4d7..b67ef28a 100644
--- a/src/pjson.ts
+++ b/src/pjson.ts
@@ -18,6 +18,7 @@ export namespace PJSON {
       commands?: string
       plugins?: string[]
       devPlugins?: string[]
+      aliases?: { [name: string]: string | null }
       update: {
         s3: S3
         autoupdate?: {