diff --git a/package.json b/package.json
index d67c6de..20c0bab 100644
--- a/package.json
+++ b/package.json
@@ -11,16 +11,17 @@
     "prettier:fix": "npx prettier --write . --config .prettierrc",
     "lint": "yarn eslint && yarn prettier:check",
     "test": "mocha",
-    "start": "yarn server & yarn worker & yarn healthWatcher"
+    "start": "concurrently \"yarn server\" \"yarn worker\" \"yarn healthWatcher\""
   },
   "author": "tornado.cash",
   "license": "MIT",
   "dependencies": {
     "ajv": "^6.12.5",
     "bull": "^3.12.1",
+    "concurrently": "^8.2.0",
     "dotenv": "^8.2.0",
     "express": "^4.17.1",
-    "gas-price-oracle": "^0.4.7",
+    "gas-price-oracle": "^0.5.2",
     "ioredis": "^4.14.1",
     "torn-token": "^1.0.5",
     "tx-manager": "^0.4.8",