diff --git a/rest_auth/registration/serializers.py b/rest_auth/registration/serializers.py
index 4799a3a..b5c43fa 100644
--- a/rest_auth/registration/serializers.py
+++ b/rest_auth/registration/serializers.py
@@ -123,8 +123,8 @@ class RegisterSerializer(serializers.Serializer):
         required=allauth_settings.USERNAME_REQUIRED
     )
     email = serializers.EmailField(required=allauth_settings.EMAIL_REQUIRED)
-    password1 = serializers.CharField(required=True, write_only=True)
-    password2 = serializers.CharField(required=True, write_only=True)
+    password1 = serializers.CharField(write_only=True)
+    password2 = serializers.CharField(write_only=True)
 
     def validate_username(self, username):
         username = get_adapter().clean_username(username)
diff --git a/rest_auth/social_serializers.py b/rest_auth/social_serializers.py
index 479019e..fb1d3dc 100644
--- a/rest_auth/social_serializers.py
+++ b/rest_auth/social_serializers.py
@@ -10,8 +10,8 @@ if 'allauth.socialaccount' in settings.INSTALLED_APPS:
 
 
 class TwitterLoginSerializer(serializers.Serializer):
-    access_token = serializers.CharField(required=True)
-    token_secret = serializers.CharField(required=True)
+    access_token = serializers.CharField()
+    token_secret = serializers.CharField()
 
     def _get_request(self):
         request = self.context.get('request')