diff --git a/caso/extract/openstack/cinder.py b/caso/extract/openstack/cinder.py
index 034794a..ebed051 100644
--- a/caso/extract/openstack/cinder.py
+++ b/caso/extract/openstack/cinder.py
@@ -66,6 +66,7 @@ def _build_record(self, volume, extract_from, extract_to):
             active_duration=active_duration,
             measure_time=measure_time,
             start_time=vol_created,
+            volume_creation=int(dateutil.parser.parse(vol_start).timestamp()),
             capacity=volume.size,
             user_dn=user,
         )
diff --git a/caso/record.py b/caso/record.py
index 2ca04ff..cd78c14 100644
--- a/caso/record.py
+++ b/caso/record.py
@@ -345,6 +345,7 @@ class StorageRecord(_BaseRecord):
     attached_to: typing.Optional[str]
     measure_time: datetime.datetime
     start_time: datetime.datetime
+    volume_creation: int
 
     storage_type: typing.Optional[str] = "Block Storage (cinder)"
 
@@ -410,6 +411,7 @@ def map_fields(field: str) -> str:
                 "attached_duration": "AttachedDuration",
                 "cloud_type": "CloudType",
                 "compute_service": "CloudComputeService",
+                "volume_creation": "VolumeCreationTime",
             }
             return d.get(field, field)
 
diff --git a/requirements.txt b/requirements.txt
index 4667ee5..17182ad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,4 +20,4 @@ python-neutronclient>=6.7.0 # Apache-2.0
 keystoneauth1>=3.4.0 # Apache-2.0
 
 stevedore
-pydantic
+pydantic==1.10.7