diff --git a/archivebox/abid_utils/abid.py b/archivebox/abid_utils/abid.py
index 66472f10..3c90e83c 100644
--- a/archivebox/abid_utils/abid.py
+++ b/archivebox/abid_utils/abid.py
@@ -36,6 +36,8 @@ class ABID(NamedTuple):
     uri: str               # e.g. E4A5CCD9
     subtype: str           # e.g. 01
     rand: str              # e.g. ZYEBQE
+    
+    # salt: str = DEFAULT_ABID_URI_SALT
 
     def __getattr__(self, attr: str) -> Any:
         return getattr(self.ulid, attr)
diff --git a/archivebox/abid_utils/models.py b/archivebox/abid_utils/models.py
index 07fd3b3a..9d0ab1d5 100644
--- a/archivebox/abid_utils/models.py
+++ b/archivebox/abid_utils/models.py
@@ -26,6 +26,7 @@ from .abid import (
     ABID_RAND_LEN,
     ABID_SUFFIX_LEN,
     DEFAULT_ABID_PREFIX,
+    DEFAULT_ABID_URI_SALT,
     abid_part_from_prefix,
     abid_from_values
 )
@@ -132,6 +133,7 @@ class ABIDModel(models.Model):
             uri=uri,
             subtype=subtype,
             rand=rand,
+            salt=DEFAULT_ABID_URI_SALT,
         )
         assert abid.ulid and abid.uuid and abid.typeid, f'Failed to calculate {prefix}_ABID for {self.__class__.__name__}'
         return abid