diff --git a/package-lock.json b/package-lock.json
index fdf408f..2e34ca7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,16 +1,16 @@
 {
   "name": "@semanticintent/semantic-d1-mcp",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@semanticintent/semantic-d1-mcp",
-      "version": "1.0.0",
+      "version": "2.0.0",
       "license": "MIT",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.17.1",
-        "dotenv": "16.4.5"
+        "dotenv": "16.4.7"
       },
       "devDependencies": {
         "@biomejs/biome": "^2.2.5",
@@ -20,6 +20,9 @@
         "tsx": "^4.20.6",
         "typescript": "^5.9.3",
         "vitest": "^3.2.4"
+      },
+      "engines": {
+        "node": ">=20.0.0"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -1634,9 +1637,9 @@
       }
     },
     "node_modules/dotenv": {
-      "version": "16.4.5",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.5.tgz",
-      "integrity": "sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==",
+      "version": "16.4.7",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.7.tgz",
+      "integrity": "sha512-47qPchRCykZC03FhkYAhrvwU4xDBFIj1QPqaarj6mdM/hgUzfPHcpkHJOn3mJAufFeeAxAzeGsr5X0M4k6fLZQ==",
       "license": "BSD-2-Clause",
       "engines": {
         "node": ">=12"
diff --git a/package.json b/package.json
index e605e53..806effe 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.17.1",
-    "dotenv": "16.4.5"
+    "dotenv": "16.4.7"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.2.5",