diff --git a/package-lock.json b/package-lock.json
index 900cb2c..691d54b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -51,6 +51,9 @@
         "typescript": "^4.3.5",
         "webpack": "^5.74.0",
         "webpack-cli": "^4.10.0"
+      },
+      "engines": {
+        "node": ">=12 <20.0.0"
       }
     },
     "node_modules/@ampproject/remapping": {
diff --git a/package.json b/package.json
index 12a92f2..4c96a9a 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "lint:js": "eslint 'src/**/*.{js,ts}' 'test/**/*.{js,ts}' cucumber.js",
     "lint:md": "remark .",
     "lint:fix": "eslint 'src/**/*.{js,ts}' 'test/**/*.{js,ts}' --fix",
-    "pretest": "npm run lint && npm run conformance",
+    "pretest": "npm run lint && npm run build && npm run conformance",
     "test": "mocha --require ts-node/register ./test/integration/**/*.ts",
     "test:one": "mocha --require ts-node/register",
     "conformance": "cucumber-js ./conformance/features/*-protocol-binding.feature -p default",