diff --git a/apps/users/serializers.py b/apps/users/serializers.py
index fceb786..7284523 100644
--- a/apps/users/serializers.py
+++ b/apps/users/serializers.py
@@ -55,7 +55,6 @@ class RequestOTPSerializer(serializers.ModelSerializer):
             )
 
         read_only_fields = ['otp_expire', 'ttl']
-        write_only_fields = []
 
     def save(self, **kwargs):
         # TODO: move it to query set
@@ -85,15 +84,16 @@ class RequestOTPSerializer(serializers.ModelSerializer):
 
 
 class RequestOTTSerializer(serializers.ModelSerializer):
+    application = serializers.CharField(required=True, write_only=True)
     class Meta:
         model = User
         fields = (
+            'application',
             'ott',
             'ott_expire',
             )
 
-        read_only_fields = ['ott', 'otp_expire']
-        write_only_fields = []
+        read_only_fields = ['ott', 'ott_expire']
 
 
 class UserInquirySerializer(serializers.ModelSerializer):
diff --git a/apps/users/views.py b/apps/users/views.py
index 4f9aeac..5aafa37 100644
--- a/apps/users/views.py
+++ b/apps/users/views.py
@@ -63,7 +63,7 @@ class RequestOTPView(generics.CreateAPIView):
     required_scopes = []
 
 
-class RequestOTTView(generics.RetrieveAPIView):
+class RequestOTTView(generics.UpdateAPIView):
     permission_classes = [IsAuthenticatedOrTokenHasScope]
     required_scopes = ['accounts.account:request_ott']
     serializer_class = RequestOTTSerializer
@@ -71,12 +71,12 @@ class RequestOTTView(generics.RetrieveAPIView):
     def get_object(self):
         return self.request.user
 
-    def get(self, request, *args, **kwargs):
+    def update(self, request, *args, **kwargs):
         # TODO: move it to query set
         user = self.get_object()
         user.set_ott()
         user.save()
-        return super().get(request, *args, **kwargs)
+        return super().update(request, *args, **kwargs)
 
 
 class UserInquiryView(generics.CreateAPIView):