diff --git a/aleksis/apps/tezor/models/invoice.py b/aleksis/apps/tezor/models/invoice.py
index 52008aff8f090738d4d40562722335e086600697..c291a1b3c65f8c68487f3e84c407abbb2b16d995 100644
--- a/aleksis/apps/tezor/models/invoice.py
+++ b/aleksis/apps/tezor/models/invoice.py
@@ -18,6 +18,8 @@ class InvoiceGroup(ExtensibleModel):
         Client, verbose_name=_("Linked client"), related_name="invoice_groups"
     )
 
+    template_name = models.CharField(verbose_name=_("Template to render invoices with as PDF"), blank=True)
+
     class Meta:
         constraints = [
             models.UniqueConstraint(fields=["client", "name"], name="group_uniq_per_client")