diff --git a/epp-client/src/domain/transfer.rs b/epp-client/src/domain/transfer.rs
index e9660c4..39f5edc 100644
--- a/epp-client/src/domain/transfer.rs
+++ b/epp-client/src/domain/transfer.rs
@@ -529,7 +529,7 @@ pub struct DomainTransferResponseData {
     pub ack_by: StringValue,
     /// The domain expiry date
     #[serde(rename = "exDate")]
-    pub expiring_at: StringValue,
+    pub expiring_at: Option<StringValue>,
 }
 
 /// Type that represents the &lt;resData&gt; tag for domain transfer response
diff --git a/epp-client/src/tests/de.rs b/epp-client/src/tests/de.rs
index ee575b3..fc95649 100644
--- a/epp-client/src/tests/de.rs
+++ b/epp-client/src/tests/de.rs
@@ -393,10 +393,10 @@ mod response {
         assert_eq!(result.transfer_data.ack_id, "ClientY".into());
         assert_eq!(result.transfer_data.ack_by, "2021-07-28T15:31:21.0Z".into());
         assert_eq!(
-            result.transfer_data.expiring_at,
+            *result.transfer_data.expiring_at.as_ref().unwrap(),
             "2022-07-02T14:53:19.0Z".into()
         );
-        assert_eq!(object.tr_ids.client_tr_id.unwrap(), CLTRID.into());
+        assert_eq!(*object.tr_ids.client_tr_id.as_ref().unwrap(), CLTRID.into());
         assert_eq!(object.tr_ids.server_tr_id, SVTRID.into());
     }
 
@@ -456,7 +456,7 @@ mod response {
         assert_eq!(result.transfer_data.ack_id, "ClientY".into());
         assert_eq!(result.transfer_data.ack_by, "2021-07-28T15:31:21.0Z".into());
         assert_eq!(
-            result.transfer_data.expiring_at,
+            *result.transfer_data.expiring_at.as_ref().unwrap(),
             "2022-07-02T14:53:19.0Z".into()
         );
         assert_eq!(object.tr_ids.client_tr_id.unwrap(), CLTRID.into());