diff --git a/src/db.ts b/src/db.ts
index 9c63ce7..bc84de9 100644
--- a/src/db.ts
+++ b/src/db.ts
@@ -1,14 +1,17 @@
-import { Dongoose, z } from '@/deps.ts';
+import { createPentagon, z } from '@/deps.ts';
 
-const db = await Deno.openKv();
+const kv = await Deno.openKv();
 
-const Users = Dongoose({
-  pubkey: z.string(),
-  username: z.string(),
-}, {
-  db,
-  name: 'users',
-  indexes: ['pubkey', 'username'],
+const userSchema = z.object({
+  pubkey: z.string().regex(/^[0-9a-f]{64}$/).describe('primary'),
+  username: z.string().regex(/^[\w_]+$/).describe('unique'),
+  createdAt: z.date(),
 });
 
-export { db, Users };
+const db = createPentagon(kv, {
+  users: {
+    schema: userSchema,
+  },
+});
+
+export { db };
diff --git a/src/deps.ts b/src/deps.ts
index 2b3250e..91833db 100644
--- a/src/deps.ts
+++ b/src/deps.ts
@@ -38,3 +38,4 @@ export { default as uuid62 } from 'npm:uuid62@^1.0.2';
 export { default as sanitizeHtml } from 'npm:sanitize-html@^2.10.0';
 export { default as ISO6391 } from 'npm:iso-639-1@2.1.15';
 export { Dongoose } from 'https://raw.githubusercontent.com/alexgleason/dongoose/68b7ad9dd7b6ec0615e246a9f1603123c1709793/mod.ts';
+export { createPentagon } from 'https://deno.land/x/pentagon@v0.1.1/mod.ts';