diff --git a/packages/stitcher/package.json b/packages/stitcher/package.json
index b71709b1..7e328f60 100644
--- a/packages/stitcher/package.json
+++ b/packages/stitcher/package.json
@@ -4,7 +4,7 @@
   "scripts": {
     "build": "tsc && cp -r ./extern/vast-client ./dist/extern",
     "start": "node ./dist/src/index.js",
-    "dev": "tsc-watch --noClear --onSuccess \"node ./dist/src/index.js\"",
+    "dev": "cp -r ./extern/vast-client ./dist/extern && tsc-watch --noClear --onSuccess \"node ./dist/src/index.js\"",
     "test": "NODE_OPTIONS=--experimental-vm-modules jest"
   },
   "devDependencies": {