diff --git a/src/documents/migrations/1054_customfieldinstance_value_monetary_amount_and_more.py b/src/documents/migrations/1054_customfieldinstance_value_monetary_amount_and_more.py
index 0bc135646..92d45de33 100644
--- a/src/documents/migrations/1054_customfieldinstance_value_monetary_amount_and_more.py
+++ b/src/documents/migrations/1054_customfieldinstance_value_monetary_amount_and_more.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.1 on 2024-09-29 16:13
+# Generated by Django 5.1.1 on 2024-09-29 16:26
 
 import django.db.models.functions.comparison
 import django.db.models.functions.text
@@ -23,7 +23,7 @@ class Migration(migrations.Migration):
                             django.db.models.functions.text.Substr("value_monetary", 1),
                             output_field=models.DecimalField(
                                 decimal_places=2,
-                                max_digits=125,
+                                max_digits=65,
                             ),
                         ),
                         value_monetary__regex="^\\d+",
@@ -32,12 +32,12 @@ class Migration(migrations.Migration):
                         django.db.models.functions.text.Substr("value_monetary", 4),
                         output_field=models.DecimalField(
                             decimal_places=2,
-                            max_digits=125,
+                            max_digits=65,
                         ),
                     ),
-                    output_field=models.DecimalField(decimal_places=2, max_digits=125),
+                    output_field=models.DecimalField(decimal_places=2, max_digits=65),
                 ),
-                output_field=models.DecimalField(decimal_places=2, max_digits=125),
+                output_field=models.DecimalField(decimal_places=2, max_digits=65),
             ),
         ),
         migrations.AlterField(
diff --git a/src/documents/models.py b/src/documents/models.py
index e10de523d..80476bffa 100644
--- a/src/documents/models.py
+++ b/src/documents/models.py
@@ -932,17 +932,17 @@ class CustomFieldInstance(models.Model):
                 value_monetary__regex=r"^\d+",
                 then=Cast(
                     Substr("value_monetary", 1),
-                    output_field=models.DecimalField(decimal_places=2, max_digits=125),
+                    output_field=models.DecimalField(decimal_places=2, max_digits=65),
                 ),
             ),
             # If the value starts with a 3-char currency symbol, use the rest of the string
             default=Cast(
                 Substr("value_monetary", 4),
-                output_field=models.DecimalField(decimal_places=2, max_digits=125),
+                output_field=models.DecimalField(decimal_places=2, max_digits=65),
             ),
-            output_field=models.DecimalField(decimal_places=2, max_digits=125),
+            output_field=models.DecimalField(decimal_places=2, max_digits=65),
         ),
-        output_field=models.DecimalField(decimal_places=2, max_digits=125),
+        output_field=models.DecimalField(decimal_places=2, max_digits=65),
         db_persist=True,
     )