diff --git a/collector/models.py b/collector/models.py
index e850293..70cdcb5 100644
--- a/collector/models.py
+++ b/collector/models.py
@@ -13,3 +13,7 @@ class Teile(models.Model):
         indexes = [
             models.Index(fields=["modified"], name="idx_modified"),
         ]
+
+    def __str__(self) -> str:
+        modified = self.modified.isoformat(timespec="seconds")
+        return f"{self.name} (last change: {modified})"