diff --git a/.gitignore b/.gitignore
index 7cd4247..d1636ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 config/
 cache/
 node_modules/
+.idea/
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..e0325e5
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+v16.17.1
diff --git a/package.json b/package.json
index a7930ad..28d1ea3 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "scripts": {
     "build": "tsc",
     "lint": "tslint --project ./tsconfig.json -t stylish",
-    "start": "ts-node src/index.ts",
+    "start": "nvm use && ts-node src/index.ts",
     "test": "doctest-ts-improved src/ && mocha --require ts-node/register \"./**/*.doctest.ts\" && (find . -type f -name \"*.doctest.ts\" | xargs rm)"
   },
   "dependencies": {