diff --git a/prepare.sh b/prepare.sh
index bd20db62..2dc509d1 100755
--- a/prepare.sh
+++ b/prepare.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 
 # Build types library
 cd types
@@ -13,4 +14,5 @@ cd ..
 # Build frontend
 cd frontend
 npm install
+npm run lib:build
 cd ..
\ No newline at end of file