diff --git a/gophish/models.py b/gophish/models.py
index 6e7c3f0..4bf0786 100644
--- a/gophish/models.py
+++ b/gophish/models.py
@@ -67,6 +67,10 @@ class Campaign(Model):
         'smtp': None,
         'url': None,
         'groups': [],
+        'redirect_url': None,
+        'campaign_template_id': None,
+        'email_send_end_date': None,
+        'attachments': None,
     }
 
     def __init__(self, **kwargs):
@@ -177,6 +181,7 @@ class CampaignResults(Model):
     _valid_properties = {
         'id': None,
         'name': None,
+        'template_id': None,
         'results': [],
         'status': None,
         'timeline': [],
diff --git a/setup.py b/setup.py
index ac1b5d7..2f61154 100644
--- a/setup.py
+++ b/setup.py
@@ -25,8 +25,8 @@
         "appdirs==1.4.0",
         "packaging==16.8",
         "pyparsing==2.1.10",
-        "python-dateutil==2.6.0",
+        "python-dateutil>=2.8.0",
         "requests>=2.20.0",
-        "six==1.10.0",
+        "six>=1.10.0",
     ],
 )