diff --git a/twitter_ads/account.py b/twitter_ads/account.py
index 88cc2a4..f5e59e1 100644
--- a/twitter_ads/account.py
+++ b/twitter_ads/account.py
@@ -13,7 +13,7 @@
                                   Card, VideoWebsiteCard, PromotedTweet)
 from twitter_ads.audience import CustomAudience
 from twitter_ads.campaign import (AppList, Campaign, FundingInstrument, LineItem,
-                                  PromotableUser, ScheduledPromotedTweet)
+                                  PromotableUser, TrackingTags, ScheduledPromotedTweet)
 
 
 class Account(Resource):
@@ -148,6 +148,12 @@ def scheduled_promoted_tweets(self, id=None, **kwargs):
         """
         return self._load_resource(ScheduledPromotedTweet, id, **kwargs)
 
+    def tracking_tags(self, id=None, **kwargs):
+        """
+        Returns a collection of Tracking Tags available to the current account.
+        """
+        return self._load_resource(TrackingTags, id, **kwargs)
+
     def video_website_cards(self, id=None, **kwargs):
         """
         Returns a collection of video website cards available to the current account.
diff --git a/twitter_ads/campaign.py b/twitter_ads/campaign.py
index fbf2717..0096162 100644
--- a/twitter_ads/campaign.py
+++ b/twitter_ads/campaign.py
@@ -141,7 +141,6 @@ def tv_shows(klass, account, **kwargs):
 resource_property(TargetingCriteria, 'operator_type')
 resource_property(TargetingCriteria, 'targeting_type')
 resource_property(TargetingCriteria, 'targeting_value')
-resource_property(TargetingCriteria, 'custom_audience_expansion')
 # sdk-only
 resource_property(TargetingCriteria, 'to_delete', transform=TRANSFORM.BOOL)
 
@@ -360,6 +359,26 @@ class ScheduledPromotedTweet(Resource, Persistence):
 resource_property(ScheduledPromotedTweet, 'scheduled_tweet_id')
 
 
+class TrackingTags(Resource, Persistence):
+
+    PROPERTIES = {}
+
+    RESOURCE_COLLECTION = '/' + API_VERSION + '/accounts/{account_id}/tracking_tags'
+    RESOURCE = '/' + API_VERSION + '/accounts/{account_id}/tracking_tags/{id}'
+
+
+# tracking tags properties
+# read-only
+resource_property(TrackingTags, 'created_at', readonly=True, transform=TRANSFORM.TIME)
+resource_property(TrackingTags, 'id', readonly=True)
+resource_property(TrackingTags, 'deleted', readonly=True, transform=TRANSFORM.BOOL)
+resource_property(TrackingTags, 'updated_at', readonly=True, transform=TRANSFORM.TIME)
+# writable
+resource_property(TrackingTags, 'line_item_id')
+resource_property(TrackingTags, 'tracking_tag_type')
+resource_property(TrackingTags, 'tracking_tag_url')
+
+
 class Tweet(object):
 
     TWEET_CREATE = '/' + API_VERSION + '/accounts/{account_id}/tweet'
diff --git a/twitter_ads/creative.py b/twitter_ads/creative.py
index ac2a36a..6fcb230 100644
--- a/twitter_ads/creative.py
+++ b/twitter_ads/creative.py
@@ -626,6 +626,7 @@ def reload(klass):
 # card properties
 # read-only
 resource_property(Card, 'card_uri', readonly=True)
+resource_property(Card, 'card_type', readonly=True)
 resource_property(Card, 'created_at', readonly=True, transform=TRANSFORM.TIME)
 resource_property(Card, 'deleted', readonly=True, transform=TRANSFORM.BOOL)
 resource_property(Card, 'updated_at', readonly=True, transform=TRANSFORM.TIME)