diff --git a/a b/a.csv
similarity index 80%
rename from a
rename to a.csv
index 8f73dda..f2e114e 100644
--- a/a
+++ b/a.csv
@@ -1,2 +1,3 @@
+id;name;email
 1, lunny, lunny@gitea.io
 2,xiaolunwen,xiaolunwen@gmail.com
\ No newline at end of file