diff --git a/scripts/build.sh b/scripts/build.sh
index 30d6812..fe018fe 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -15,9 +15,9 @@ build_gui() {
 
   # Ensure frontend dependencies are installed
   cd frontend
-  if [ ! -d "node_modules" ] || [ ! -f "node_modules/.package-lock.json" ]; then
+  if [ ! -d "node_modules" ] || [ "package-lock.json" -nt "node_modules/.package-lock.json" ]; then
     echo "==> Installing frontend dependencies..."
-    npm install
+    npm ci
   fi
   npm run build
   cd ..