diff --git a/package-lock.json b/package-lock.json
index 7b4f8685..71b3ec92 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -31,6 +31,9 @@
         "typescript": "^5.5.4",
         "typescript-eslint": "^8.0.0",
         "ws": "^8.18.0"
+      },
+      "engines": {
+        "node": ">=18"
       }
     },
     "node_modules/@ampproject/remapping": {
diff --git a/package.json b/package.json
index 13907435..a2b392be 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "url": "git+https://github.com/modelcontextprotocol/typescript-sdk.git"
   },
   "engines": {
-    "node": ">=22.12.0"
+    "node": ">=18"
   },
   "keywords": [
     "modelcontextprotocol",