diff --git a/ram/roster/migrations/0037_alter_rollingstock_road_number_int.py b/ram/roster/migrations/0037_alter_rollingstock_road_number_int.py
new file mode 100644
index 0000000..04ac49b
--- /dev/null
+++ b/ram/roster/migrations/0037_alter_rollingstock_road_number_int.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.1.4 on 2025-05-04 17:11
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("roster", "0036_delete_rollingstockdocument"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="rollingstock",
+            name="road_number_int",
+            field=models.PositiveIntegerField(default=0),
+        ),
+    ]
diff --git a/ram/roster/models.py b/ram/roster/models.py
index 72fc261..7e1534d 100644
--- a/ram/roster/models.py
+++ b/ram/roster/models.py
@@ -67,7 +67,7 @@ class RollingStock(BaseModel):
         verbose_name="Class",
     )
     road_number = models.CharField(max_length=128, unique=False)
-    road_number_int = models.PositiveSmallIntegerField(default=0, unique=False)
+    road_number_int = models.PositiveIntegerField(default=0, unique=False)
     manufacturer = models.ForeignKey(
         Manufacturer,
         on_delete=models.CASCADE,