diff --git a/package-overrides/npm/unexpected@10.8.1.json b/package-overrides/npm/unexpected@10.8.1.json
index dbdf183..ad014e5 100644
--- a/package-overrides/npm/unexpected@10.8.1.json
+++ b/package-overrides/npm/unexpected@10.8.1.json
@@ -1,4 +1,5 @@
 {
   "main": "unexpected.js",
-  "dependencies": {}
+  "dependencies": {},
+  "jspmPackage": true
 }