From fbe2222d1b06235ae82566664f748c3fe3eb08d9 Mon Sep 17 00:00:00 2001
From: NotNite <hi@notnite.com>
Date: Sat, 29 Apr 2023 16:32:59 -0400
Subject: [PATCH] thanks naku

---
 src/schemas.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/schemas.ts b/src/schemas.ts
index b9630ba..4e62f96 100644
--- a/src/schemas.ts
+++ b/src/schemas.ts
@@ -3,7 +3,9 @@ import * as Yup from "yup";
 const REQUIRED = "Required.";
 const USERNAME = Yup.string()
   .required(REQUIRED)
-  .min(1, "Username is too short.");
+  .min(1, "Username is too short.")
+  .matches(/^[a-z0-9]+$/, "Username must be lowercase letters and numbers.");
+
 const DISPLAY_NAME = Yup.string()
   .required(REQUIRED)
   .min(1, "Display name is too short.");