diff --git a/colin-api/src/colin_api/models/business_snapshot.py b/colin-api/src/colin_api/models/business_snapshot.py
index a0a2302752..f003477602 100644
--- a/colin-api/src/colin_api/models/business_snapshot.py
+++ b/colin-api/src/colin_api/models/business_snapshot.py
@@ -116,7 +116,14 @@ def _normalize_party(cls, party: Party) -> Dict:
             'officer': {**raw['officer'], 'id': raw['id'], 'email': None},
             'deliveryAddress': cls._normalize_address(raw['deliveryAddress']),
             'mailingAddress': cls._normalize_address(raw['mailingAddress']),
-            'roles': raw['roles'] or [],
+            'roles': [
+                {
+                    'roleType': role.get('roleType'),
+                    'appointmentDate': cls._to_iso_date(role.get('appointmentDate')),
+                    'cessationDate': cls._to_iso_date(role.get('cessationDate')),
+                }
+                for role in (raw['roles'] or [])
+            ],
         }
 
     @classmethod
@@ -201,3 +208,12 @@ def _to_iso_datetime(value: Optional[str]) -> Optional[str]:
         if value and value.endswith('-00:00'):
             return value[:-6] + '+00:00'
         return value
+
+    @staticmethod
+    def _to_iso_date(value) -> Optional[str]:
+        """Coerce a role date to YYYY-MM-DD preserving None."""
+        if value is None:
+            return None
+        if isinstance(value, datetime):
+            return value.strftime('%Y-%m-%d')
+        return str(value)[:10]
diff --git a/colin-api/src/colin_api/version.py b/colin-api/src/colin_api/version.py
index ff29793d89..eb6280f2c0 100644
--- a/colin-api/src/colin_api/version.py
+++ b/colin-api/src/colin_api/version.py
@@ -22,4 +22,4 @@
 Development release segment: .devN
 """
 
-__version__ = '2.172.1'  # pylint: disable=invalid-name
+__version__ = '2.172.2'  # pylint: disable=invalid-name
diff --git a/colin-api/tests/unit/api/test_business_snapshot.py b/colin-api/tests/unit/api/test_business_snapshot.py
index 3bb2f9a92a..6abbf66052 100644
--- a/colin-api/tests/unit/api/test_business_snapshot.py
+++ b/colin-api/tests/unit/api/test_business_snapshot.py
@@ -13,9 +13,11 @@
 # limitations under the License.
 
 """Tests to assure the business snapshot end-point."""
+from datetime import datetime
+
 from colin_api.exceptions import BusinessNotFoundException, PartiesNotFoundException
 from colin_api.models import Business, Party, ShareObject
-from tests.unit import LEAR_ADDRESS, build_business, bypass_auth
+from tests.unit import LEAR_ADDRESS, build_business, build_director, bypass_auth
 
 
 SNAPSHOT_URL = '/api/v1/businesses/BC0870226/snapshot'
@@ -109,6 +111,25 @@ def test_get_snapshot_reports_future_effective_filing(client, mocker, authorized
     assert 'effective_dt' in mock_db.cursor.execute.call_args.args[0]
 
 
+def test_get_snapshot_normalizes_role_dates(client, mocker, authorized, mock_db,
+                                            mock_lookups):  # pylint: disable=unused-argument
+    """Assert a raw datetime role date (the founding-date fallback) is normalized to YYYY-MM-DD."""
+    director = build_director()
+    director.roles = [{
+        'roleType': 'Director',
+        'appointmentDate': datetime(2013, 4, 24, 0, 0),
+        'cessationDate': None
+    }]
+    mocker.patch.object(Party, 'get_current', return_value=[director])
+
+    rv = client.get(SNAPSHOT_URL)
+
+    assert rv.status_code == 200
+    assert rv.json['parties'][0]['roles'] == [
+        {'roleType': 'Director', 'appointmentDate': '2013-04-24', 'cessationDate': None}
+    ]
+
+
 def test_get_snapshot_without_parties(client, mocker, authorized, mock_db,
                                       mock_lookups):  # pylint: disable=unused-argument
     """Assert a corp with no current directors on file still returns a snapshot."""