diff --git a/CHANGELOG.md b/CHANGELOG.md
index a15dd0a4..69317c91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 nylas-python Changelog
 ======================
 
+Unreleased
+----------------
+* Add missing `source` field in `Contact` class
+
 v5.4.1
 ----------------
 * Fix issue where keyword arguments calling `_update_resource` were not correctly resolving to URL params
diff --git a/nylas/client/restful_models.py b/nylas/client/restful_models.py
index f0bed95e..0fcde8d7 100644
--- a/nylas/client/restful_models.py
+++ b/nylas/client/restful_models.py
@@ -580,6 +580,7 @@ class Contact(NylasAPIObject):
         "job_status_id",
         "manager_name",
         "office_location",
+        "source",
         "notes",
         "picture_url",
     ]
diff --git a/tests/conftest.py b/tests/conftest.py
index 174ccb62..2107b98a 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1193,6 +1193,7 @@ def mock_contact(mocked_responses, account_id, api_url):
         "job_title": "QA Tester",
         "manager_name": "George",
         "office_location": "Over the Rainbow",
+        "source": "inbox",
         "notes": "This is a note",
         "picture_url": "{base}/contacts/{id}/picture".format(
             base=api_url, id="9hga75n6mdvq4zgcmhcn7hpys"
diff --git a/tests/test_contacts.py b/tests/test_contacts.py
index 1798df3a..66f613b5 100644
--- a/tests/test_contacts.py
+++ b/tests/test_contacts.py
@@ -20,6 +20,7 @@ def test_get_contact(api_client):
     assert contact.given_name == "Given"
     assert contact.surname == "Sur"
     assert contact.birthday == date(1964, 10, 5)
+    assert contact.source == "inbox"
 
 
 @pytest.mark.usefixtures("mock_contacts")