diff --git a/package.json b/package.json
index 84a0e6b..121d625 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "3.0.0",
   "description": "Ethereum Package Manager Specifications",
   "scripts": {
-    "prepare": "json2ts -i ./spec/package.spec.json -o ./index.d.ts"
+    "prepare": "json2ts -i ./spec/v3.spec.json -o ./index.d.ts"
   },
   "files": [
     "spec",