diff --git a/package.json b/package.json
index fe9229d3..e80643f5 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "docs:serve": "compodoc -p src/tsconfig.app.json -d docs -s",
     "prepush": "npm run lint:ci",
     "release:changelog": "npm run conventional-changelog -- -p angular -i CHANGELOG.md -s",
-    "postinstall": "ngcc --properties es2015 es5 browser module main --first-only --create-ivy-entry-points"
+    "postinstall": "ngcc --properties es2015 es5 browser module main --first-only --create-ivy-entry-points --tsconfig \"./src/tsconfig.app.json\""
   },
   "dependencies": {
     "@akveo/ng2-completer": "^9.0.1",