diff --git a/frontend/src/pages/auth/sign-up.astro b/frontend/src/pages/auth/sign-up.astro
index 3771e46..c8459f6 100644
--- a/frontend/src/pages/auth/sign-up.astro
+++ b/frontend/src/pages/auth/sign-up.astro
@@ -884,7 +884,9 @@ import { SITE_URL } from '@constants';
     }
 
     function validatePassword(value: string): boolean {
-        return value.length >= 8 && value.length <= 12;
+        const hasLetter = /[A-Za-zА-Яа-я]/.test(value);
+        const hasDigit = /\d/.test(value);
+        return value.length >= 8 && value.length <= 20 && hasLetter && hasDigit;
     }
 
     document.querySelectorAll('.toggle-password').forEach(button => {