diff --git a/massive/rest/models/trades.py b/massive/rest/models/trades.py
index 25b9adc7..70f8012d 100644
--- a/massive/rest/models/trades.py
+++ b/massive/rest/models/trades.py
@@ -49,6 +49,7 @@ def from_dict(d):
             d.get("t", None),
             d.get("y", None),
             d.get("c", None),
+            d.get("ds", None),
             d.get("e", None),
             d.get("i", None),
             d.get("p", None),
diff --git a/massive/websocket/models/models.py b/massive/websocket/models/models.py
index c0903530..2c6d28b4 100644
--- a/massive/websocket/models/models.py
+++ b/massive/websocket/models/models.py
@@ -102,6 +102,7 @@ def from_dict(d):
             d.get("z", None),
             d.get("p", None),
             d.get("s", None),
+            d.get("ds", None),
             d.get("c", None),
             d.get("t", None),
             d.get("q", None),