diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..b6f27f1
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+engine-strict=true
diff --git a/package.json b/package.json
index 6eaead1..7dfb843 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,9 @@
   "version": "0.1.0",
   "private": true,
   "packageManager": "pnpm@9.6.0",
+  "engines": {
+    "node": ">=18 <21"
+  },
   "pnpm": {
     "onlyBuiltDependencies": [
       "@sentry-internal/node-cpu-profiler",
@@ -158,4 +161,4 @@
     "@vitest/coverage-v8": "^3.2.4",
     "whatwg-fetch": "^3.6.20"
   }
-}
\ No newline at end of file
+}