diff --git a/packages/toix/package.json b/packages/toix/package.json
index bbafb32..87d66fd 100644
--- a/packages/toix/package.json
+++ b/packages/toix/package.json
@@ -1,8 +1,11 @@
 {
   "name": "@toi/toix",
-  "version": "1.0.14",
+  "version": "1.0.15",
   "description": "Extra validators for Toi.",
   "main": "build/index.js",
+  "engines": {
+    "node": ">=6.13"
+  },
   "files": [
     "build/**/*.{js,js.map,d.ts,d.ts.map}",
     "index.ts",
@@ -30,15 +33,13 @@
   "license": "MIT",
   "dependencies": {
     "@toi/toi": "^1.0.0",
-    "isemail": "^3.2.0",
-    "node": ">=10.0.0"
+    "isemail": "^3.2.0"
   },
   "devDependencies": {
     "@types/mocha": "^5.2.5",
     "chai": "^4.1.2",
     "istanbul": "^0.4.5",
     "mocha": "^5.2.0",
-    "node": ">=10.0.0",
     "nyc": "^13.0.1",
     "prettier": "^1.17.1",
     "proxyquire": "^2.1.0",
diff --git a/yarn.lock b/yarn.lock
index 3ed2801..9bd22e3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -892,18 +892,6 @@ ms@2.0.0:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
   integrity sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=
 
-node-bin-setup@^1.0.0:
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/node-bin-setup/-/node-bin-setup-1.0.6.tgz#4b5c9bb937ece702d7069b36ca78af4684677528"
-  integrity sha512-uPIxXNis1CRbv1DwqAxkgBk5NFV3s7cMN/Gf556jSw6jBvV7ca4F9lRL/8cALcZecRibeqU+5dFYqFFmzv5a0Q==
-
-node@>=10.0.0:
-  version "12.3.1"
-  resolved "https://registry.yarnpkg.com/node/-/node-12.3.1.tgz#286e084d98f8f5b2e4cae5e7e36ed290809f8c0c"
-  integrity sha512-v5jzaCc3aQ9RLa4f6Fj4RzvyLzJGyx6OYtuX1o8R/RaouItwBjhrI298hUrGo2A4AQoL23buj0HCRrdw4YvjLg==
-  dependencies:
-    node-bin-setup "^1.0.0"
-
 nopt@3.x:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"