diff --git a/src/lib/auth.ts b/src/lib/auth.ts
index df901ca..d467dcc 100644
--- a/src/lib/auth.ts
+++ b/src/lib/auth.ts
@@ -35,8 +35,8 @@ export async function validateSession(): Promise<AuthResult> {
     const sessions = await sql`
       SELECT s.user_id, s.expires, fm.family_id as family_id, f.name as family_name, f.tier
       FROM sessions s
-      JOIN users u ON u.id = s.user_id
-      LEFT JOIN family_members fm ON fm.user_id = u.id
+      JOIN users u ON u.id::text = s.user_id::text
+      LEFT JOIN family_members fm ON fm.user_id::text = s.user_id::text
       LEFT JOIN families f ON f.id = fm.family_id
       WHERE s.session_token = ${sessionToken}
       AND s.expires > NOW()