diff --git a/package.json b/package.json
index 0917e118ca..400a9a538c 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "db-migrate": "db-migrate",
     "lint": "eslint .",
     "pretest": "npm run lint",
-    "test": "NODE_ENV=test PORT=4243 ava",
+    "test": "NODE_ENV=test PORT=4243 ava --serial",
     "test:docker": "./scripts/docker-postgres.sh",
     "test:watch": "npm run test -- --watch",
     "test:pg-virtualenv": "pg_virtualenv npm run test:pg-virtualenv-chai",