diff --git a/apps/users/serializers.py b/apps/users/serializers.py
index e4bf1cc..82e13be 100644
--- a/apps/users/serializers.py
+++ b/apps/users/serializers.py
@@ -5,6 +5,7 @@ from rest_framework import serializers
 from apps.users.models import User
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
+from unidecode import unidecode
 
 from utils.exceptions import UnprocessableEntity
 
@@ -62,6 +63,10 @@ class RequestOTPSerializer(serializers.ModelSerializer):
 
         read_only_fields = ['otp_expire', 'ttl']
 
+    def validate(self, attrs):
+        attrs['phone_number'] = unidecode(attrs['phone_number'])
+        return attrs
+
     def save(self, **kwargs):
         # TODO: move it to query set
         validated_data = self.validated_data
diff --git a/requirements.in b/requirements.in
index ccc7cf9..9caa867 100644
--- a/requirements.in
+++ b/requirements.in
@@ -21,4 +21,5 @@ django_redis
 django_minio_backend
 daphne
 Twisted[tls,http2]
-packaging==25.0
\ No newline at end of file
+packaging==25.0
+unidecode
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 1eb7ad6..ebd29a8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -246,3 +246,4 @@ zope-interface==8.2
     # via
     #   gevent
     #   twisted
+unidecode==1.4.0