diff --git a/bothub/api/v2/nlp/views.py b/bothub/api/v2/nlp/views.py
index db6bdeaf5..4cb970210 100644
--- a/bothub/api/v2/nlp/views.py
+++ b/bothub/api/v2/nlp/views.py
@@ -203,7 +203,7 @@ class RepositoryAuthorizationParseViewSet(mixins.RetrieveModelMixin, GenericView
     queryset = RepositoryAuthorization.objects
     serializer_class = NLPSerializer
     permission_classes = [AllowAny]
-    authentication_classes = [NLPAuthentication]
+    authentication_classes = []
 
     def retrieve(self, request, *args, **kwargs):
         check_auth(request)
@@ -573,7 +573,7 @@ class RepositoryUpdateInterpretersViewSet(
     queryset = RepositoryVersionLanguage.objects
     serializer_class = NLPSerializer
     permission_classes = [AllowAny]
-    authentication_classes = [NLPAuthentication]
+    authentication_classes = []
 
     def retrieve(self, request, *args, **kwargs):
         check_auth(request)
diff --git a/bothub/authentication/authorization.py b/bothub/authentication/authorization.py
index 187597e63..30fe70498 100644
--- a/bothub/authentication/authorization.py
+++ b/bothub/authentication/authorization.py
@@ -41,9 +41,6 @@ class NLPAuthentication(TokenAuthentication):
     model = RepositoryAuthorization
 
     def authenticate(self, request):
-        from bothub.api.v2.nlp.views import RepositoryAuthorizationParseViewSet
-        from bothub.api.v2.nlp.views import RepositoryUpdateInterpretersViewSet
-
         auth = get_authorization_header(request).split()
 
         if not auth or auth[0].lower() != self.keyword.lower().encode():
@@ -64,20 +61,13 @@ def authenticate(self, request):
             )
             raise exceptions.AuthenticationFailed(msg)
 
-        if isinstance(
-            request.parser_context.get("view"), RepositoryAuthorizationParseViewSet
-        ) or isinstance(
-            request.parser_context.get("view"), RepositoryUpdateInterpretersViewSet
-        ):
-            return self.authenticate_credentials(token, validation=False)
-
-        return self.authenticate_credentials(token, validation=True)
+        return self.authenticate_credentials(token)
 
-    def authenticate_credentials(self, key, **kwargs):
+    def authenticate_credentials(self, key):
         model = self.get_model()
         try:
             authorization = model.objects.get(uuid=key)
-            if not authorization.can_translate and kwargs.get("validation"):
+            if not authorization.can_translate:
                 raise exceptions.PermissionDenied()
 
             return (authorization.user, authorization)
diff --git a/bothub/common/models.py b/bothub/common/models.py
index 28a35c2a7..28759da4a 100644
--- a/bothub/common/models.py
+++ b/bothub/common/models.py
@@ -431,31 +431,16 @@ def validate_if_can_run_automatic_evaluate(self, language: str) -> None:
 
     def request_nlp_train(self, user_authorization, data):
         try:  # pragma: no cover
-            if data.get("repository_version"):
-                r = requests.post(  # pragma: no cover
-                    "{}train/".format(
-                        self.nlp_server
-                        if self.nlp_server
-                        else settings.BOTHUB_NLP_BASE_URL
-                    ),
-                    data={"repository_version": data.get("repository_version")},
-                    headers={
-                        "Authorization": "Bearer {}".format(user_authorization.uuid)
-                    },
-                )
-            else:
-                r = requests.post(  # pragma: no cover
-                    "{}train/".format(
-                        self.nlp_server
-                        if self.nlp_server
-                        else settings.BOTHUB_NLP_BASE_URL
-                    ),
-                    data={},
-                    headers={
-                        "Authorization": "Bearer {}".format(user_authorization.uuid)
-                    },
-                )
+            url = f"{self.nlp_server if self.nlp_server else settings.BOTHUB_NLP_BASE_URL}train/"
+            data = {
+                "repository_version": data.get("repository_version")
+            }
+            headers = {"Authorization": f"Bearer {user_authorization.uuid}"}
+
+            r = requests.post(url, data=json.dumps(data), headers=headers)
+
             return r  # pragma: no cover
+
         except requests.exceptions.ConnectionError:  # pragma: no cover
             raise APIException(  # pragma: no cover
                 {"status_code": status.HTTP_503_SERVICE_UNAVAILABLE},
diff --git a/bothub/urls.py b/bothub/urls.py
index 5f28d2c1c..4b513f210 100644
--- a/bothub/urls.py
+++ b/bothub/urls.py
@@ -21,7 +21,7 @@
 schema_view = get_schema_view(
     openapi.Info(
         title="API Documentation",
-        default_version="v2.1.15",
+        default_version="v2.1.18",
         description="Documentation",
         terms_of_service="https://bothub.it/terms",
         contact=openapi.Contact(email="bothub@ilhasoft.com.br"),