diff --git a/membershipworks/management/commands/scrape_membershipworks.py b/membershipworks/management/commands/scrape_membershipworks.py
index ad6b8db..791a0ab 100644
--- a/membershipworks/management/commands/scrape_membershipworks.py
+++ b/membershipworks/management/commands/scrape_membershipworks.py
@@ -1,4 +1,4 @@
-from datetime import datetime
+from datetime import datetime, timedelta
 
 from django.conf import settings
 from django.core.management.base import BaseCommand
@@ -59,11 +59,16 @@ class Command(BaseCommand):
             member.save()
             member.flags.set(self.flags_for_member(csv_member, flags, folders))
 
-        print("Getting/Updating transactions...")
-        # Deduping these is hard, so just recreate the data every time
-        Transaction.objects.all().delete()
         now = datetime.now()
         start_date = datetime(2010, 1, 1)
+        last_transaction = Transaction.objects.order_by("timestamp").last()
+        if last_transaction is not None:
+            # technically this has the potential to lose
+            # transactions, but it should be incredibly unlikely
+            start_date = last_transaction.timestamp + timedelta(seconds=1)
+
+        print(f"Getting/Updating transactions since {start_date}...")
+
         transactions_csv = membershipworks.get_transactions(start_date, now)
         transactions_json = membershipworks.get_transactions(start_date, now, json=True)
         # this is terrible, but as long as the dates are the same, should be fiiiine