diff --git a/.node-version b/.node-version
new file mode 100644
index 000000000..d5a159609
--- /dev/null
+++ b/.node-version
@@ -0,0 +1 @@
+20.10.0
diff --git a/package.json b/package.json
index c7963ec6f..88d8812d8 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git"
   },
   "engines": {
-    "node": ">=18"
+    "node": ">=20.10.0"
   },
   "keywords": [
     "modelcontextprotocol",