diff --git a/src/models.py b/src/models.py
index 955c491..0ca7e66 100644
--- a/src/models.py
+++ b/src/models.py
@@ -27,6 +27,7 @@ class B4wExport(BaseModel):
     account_iban: str = Field(alias="OwnrAcctIBAN", pattern=IBAN_PATTERN)
     account_currency: Currency = Field(alias="OwnrAcctCcy")
     date_valid: date = Field(alias="ValDt")
+    date_book: date = Field(alias="BookDt")
     amount: Decimal = Field(alias="Amt")
     amount_currency: Currency = Field(alias="AmtCcy")
     sign: int = Field(alias="CdtDbtInd")