diff --git a/apps/web/src/db.ts b/apps/web/src/db.ts
index 539d588..a1d8342 100644
--- a/apps/web/src/db.ts
+++ b/apps/web/src/db.ts
@@ -4,15 +4,9 @@ const sql = postgres(process.env.DATABASE_URL ?? "postgres://pingql:pingql@local
 
 export default sql;
 
-// Run migrations on startup — full rebuild (no real users)
 export async function migrate() {
-  await sql`DROP TABLE IF EXISTS pings CASCADE`;
-  await sql`DROP TABLE IF EXISTS api_keys CASCADE`;
-  await sql`DROP TABLE IF EXISTS monitors CASCADE`;
-  await sql`DROP TABLE IF EXISTS accounts CASCADE`;
-
   await sql`
-    CREATE TABLE accounts (
+    CREATE TABLE IF NOT EXISTS accounts (
       id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
       key         TEXT NOT NULL UNIQUE,
       email_hash  TEXT,
@@ -21,7 +15,7 @@ export async function migrate() {
   `;
 
   await sql`
-    CREATE TABLE monitors (
+    CREATE TABLE IF NOT EXISTS monitors (
       id               TEXT PRIMARY KEY DEFAULT gen_random_uuid()::text,
       account_id       UUID NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,
       name             TEXT NOT NULL,
@@ -38,7 +32,7 @@ export async function migrate() {
   `;
 
   await sql`
-    CREATE TABLE pings (
+    CREATE TABLE IF NOT EXISTS pings (
       id          BIGSERIAL PRIMARY KEY,
       monitor_id  TEXT NOT NULL REFERENCES monitors(id) ON DELETE CASCADE,
       checked_at  TIMESTAMPTZ NOT NULL DEFAULT now(),
@@ -54,7 +48,7 @@ export async function migrate() {
   await sql`CREATE INDEX IF NOT EXISTS idx_pings_checked_at ON pings(checked_at)`;
 
   await sql`
-    CREATE TABLE api_keys (
+    CREATE TABLE IF NOT EXISTS api_keys (
       id           UUID PRIMARY KEY DEFAULT gen_random_uuid(),
       key          TEXT NOT NULL UNIQUE,
       account_id   UUID NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,