diff --git a/packages/taler-wallet-core/package.json b/packages/taler-wallet-core/package.json
index dee2a8771..bee59ebe7 100644
--- a/packages/taler-wallet-core/package.json
+++ b/packages/taler-wallet-core/package.json
@@ -12,6 +12,7 @@
   "author": "Florian Dold",
   "license": "GPL-3.0",
   "scripts": {
+    "prepare": "tsc && rollup -c",
     "compile": "tsc && rollup -c",
     "pretty": "prettier --write src",
     "test": "tsc && ava",