diff --git a/package.json b/package.json
index 1d2d9c14a..f81eef0f9 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "build": "vue-cli-service build && webpack --config webpack/prod.js",
     "lint": "vue-cli-service lint",
     "background": "webpack --config webpack/prod.js",
-    "dev-s": "cd test && tsc && node ./dist/index.js",
+    "dev-s": "cd test && yarn install && tsc && node ./dist/index.js",
     "dev": "vue-cli-service build --mode=development && webpack --config webpack/dev.js"
   },
   "dependencies": {