diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 836fe377a..98a0715a4 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -1,7 +1,7 @@
 django==2.2.18
 django-haystack==2.8.1
 django-filter==2.0.0
-djangorestframework==3.9.1
+djangorestframework==3.11.2
 dj-database-url==0.5.0
 django-braces==1.14.0
 django-crispy-forms==1.7.2
@@ -14,7 +14,7 @@ django-speedinfo==1.4.0
 django-extensions==2.1.4
 django-image-cropping==1.2
 django-webpack-loader==0.6.0
-drf-yasg==1.13.0
+drf-yasg==1.20.0
 easy-thumbnails==2.5
 python-decouple==3.1
 psycopg2-binary==2.8.6
diff --git a/sapl/api/views.py b/sapl/api/views.py
index 6d506e6bf..f4e853ccd 100644
--- a/sapl/api/views.py
+++ b/sapl/api/views.py
@@ -62,12 +62,11 @@ class BusinessRulesNotImplementedMixin:
         raise Exception(_("DELETE Delete não implementado"))
 
 
-class SaplApiViewSet(ModelViewSet):
-    filter_backends = (DjangoFilterBackend,)
-
-
 class SaplApiViewSetConstrutor():
 
+    class SaplApiViewSet(ModelViewSet):
+        filter_backends = (DjangoFilterBackend,)
+
     _built_sets = {}
 
     @classonlymethod
@@ -124,6 +123,9 @@ class SaplApiViewSetConstrutor():
                     __str__ = SerializerMethodField()
 
                     class Meta(_meta_serializer):
+                        if not hasattr(_meta_serializer, 'ref_name'):
+                            ref_name = None
+
                         if not hasattr(_meta_serializer, 'model'):
                             model = _model
 
@@ -152,7 +154,7 @@ class SaplApiViewSetConstrutor():
                             model = _model
 
                 # Define uma classe padrão ModelViewSet de DRF
-                class ModelSaplViewSet(SaplApiViewSet):
+                class ModelSaplViewSet(SaplApiViewSetConstrutor.SaplApiViewSet):
                     queryset = _model.objects.all()
 
                     # Utiliza o filtro customizado pela classe
diff --git a/sapl/settings.py b/sapl/settings.py
index 1e577eb20..da424db68 100644
--- a/sapl/settings.py
+++ b/sapl/settings.py
@@ -65,9 +65,7 @@ SAPL_APPS = (
     'sapl.redireciona_urls',
     'sapl.compilacao',
     'sapl.api',
-
     'sapl.rules'
-
 )
 
 INSTALLED_APPS = (
@@ -84,7 +82,6 @@ INSTALLED_APPS = (
     'floppyforms',
 
     'drf_yasg',
-    # 'rest_framework_swagger',
     'rest_framework',
     'rest_framework.authtoken',
     'django_filters',
diff --git a/setup.py b/setup.py
index 99b6a28ca..d45823d43 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ install_requires = [
     'django>=1.11.19,<2.0',
     'django-haystack==2.8.1',
     'django-filter==2.0.0',
-    'djangorestframework==3.9.1',
+    'djangorestframework==3.11.2',
     'dj-database-url==0.5.0',
     'django-braces==1.9.0',
     'django-crispy-forms==1.7.2',
@@ -25,7 +25,7 @@ install_requires = [
     'django-extensions==2.1.4',
     'django-image-cropping==1.2.0',
     'django-webpack-loader==0.6.0',
-    'drf-yasg==1.13.0',
+    'drf-yasg==1.20.0',
     'easy-thumbnails==2.5',
     'python-decouple==3.1',
     'psycopg2-binary==2.7.6.1',