diff --git a/src/scitacean/_html_repr/_attachment_html.py b/src/scitacean/_html_repr/_attachment_html.py
index 2b0931f9..8cf83312 100644
--- a/src/scitacean/_html_repr/_attachment_html.py
+++ b/src/scitacean/_html_repr/_attachment_html.py
@@ -54,7 +54,7 @@ def _get_fields(attachment: Attachment) -> list[Field]:
         Field(
             name=_strip_leading_underscore(field.name),
             value=getattr(attachment, field.name),
-            type=field.type,
+            type=field.type,  # type: ignore[arg-type]
             description="",
             read_only=_is_read_only(field.name),
             required=False,