diff --git a/package.json b/package.json
index dea3b91a..8e8ec24f 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
   "dependencies": {},
   "peerDependencies": {},
   "devDependencies": {
+    "seedrandom": "^3.0.5",
     "@tensorflow/tfjs": "^2.7.0",
     "@tensorflow/tfjs-node": "^2.7.0",
     "@vladmandic/pilogger": "^0.2.6",
@@ -39,11 +40,11 @@
   "scripts": {
     "start": "node --trace-warnings --unhandled-rejections=strict --trace-uncaught --no-deprecation src/node.js",
     "lint": "eslint src/*.js demo/*.js",
-    "build-iife": "esbuild --bundle --platform=browser --sourcemap --target=esnext --format=iife --external:fs --external:seedrandom --global-name=Human --metafile=dist/human.json --outfile=dist/human.js src/human.js",
-    "build-esm-bundle": "esbuild --bundle --platform=browser --sourcemap --target=esnext --format=esm --external:fs --external:seedrandom --metafile=dist/human.esm.json --outfile=dist/human.esm.js src/human.js",
-    "build-esm-nobundle": "esbuild --bundle --platform=browser --sourcemap --target=esnext --format=esm --external:@tensorflow --external:fs --external:seedrandom --metafile=dist/human.esm-nobundle.json --outfile=dist/human.esm-nobundle.js src/human.js",
-    "build-node": "esbuild --bundle --platform=node --sourcemap --target=esnext --format=cjs --metafile=dist/human.node.json --external:seedrandom --outfile=dist/human.node.js src/human.js",
-    "build-node-nobundle": "esbuild --bundle --platform=node --sourcemap --target=esnext --format=cjs --external:@tensorflow --external:seedrandom --metafile=dist/human.node.json --outfile=dist/human.node-nobundle.js src/human.js",
+    "build-iife": "esbuild --bundle --platform=browser --sourcemap --target=esnext --format=iife --external:fs --global-name=Human --metafile=dist/human.json --outfile=dist/human.js src/human.js",
+    "build-esm-bundle": "esbuild --bundle --platform=browser --sourcemap --target=esnext --format=esm --external:fs --metafile=dist/human.esm.json --outfile=dist/human.esm.js src/human.js",
+    "build-esm-nobundle": "esbuild --bundle --platform=browser --sourcemap --target=esnext --format=esm --external:@tensorflow --external:fs --metafile=dist/human.esm-nobundle.json --outfile=dist/human.esm-nobundle.js src/human.js",
+    "build-node": "esbuild --bundle --platform=node --sourcemap --target=esnext --format=cjs --metafile=dist/human.node.json --outfile=dist/human.node.js src/human.js",
+    "build-node-nobundle": "esbuild --bundle --platform=node --sourcemap --target=esnext --format=cjs --external:@tensorflow --metafile=dist/human.node.json --outfile=dist/human.node-nobundle.js src/human.js",
     "build": "rimraf dist/* && npm run build-iife && npm run build-esm-bundle && npm run build-esm-nobundle && npm run build-node && npm run build-node-nobundle && ls -l dist/",
     "update": "npm update --depth 20 --force && npm dedupe && npm prune && npm audit",
     "changelog": "node changelog.js"