diff --git a/run.js b/run.js
index b58946c..5d8890e 100644
--- a/run.js
+++ b/run.js
@@ -1,7 +1,7 @@
 #!/usr/bin/env node
 // Entry point with hardcoded env vars for Claude Code MCP
 
-process.env.DB_HOST = "10.0.1.1";
+process.env.DB_HOST = "infra.agiliton.internal";
 process.env.DB_PORT = "5432";
 process.env.DB_NAME = "agiliton";
 process.env.DB_USER = "agiliton";
diff --git a/src/db.ts b/src/db.ts
index 0412c20..a450dfd 100644
--- a/src/db.ts
+++ b/src/db.ts
@@ -2,9 +2,9 @@ import pg from 'pg';
 const { Pool } = pg;
 
 // Configuration - Direct WireGuard connection to INFRA VM PostgreSQL
-// HARDCODED to prevent any env var override issues
+// Uses DNS hostname (infra.agiliton.internal) via WireGuard DNS
 const config = {
-  host: '10.0.1.1',  // INFRA VM - agiliton database
+  host: process.env.POSTGRES_HOST || 'infra.agiliton.internal',
   port: 5432,
   database: 'agiliton',
   user: 'agiliton',