diff --git a/.node-version b/.node-version
new file mode 100644
index 0000000..209e3ef
--- /dev/null
+++ b/.node-version
@@ -0,0 +1 @@
+20
diff --git a/package.json b/package.json
index a40215c..fcfdb71 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,9 @@
   },
   "license": "MIT",
   "type": "module",
+  "engines": {
+    "node": ">=18"
+  },
   "dependencies": {
     "@fontsource/geist-mono": "^5.2.8",
     "@radix-ui/react-accordion": "^1.2.12",