diff --git a/docs/detections/api/lists/api-import-list-items.asciidoc b/docs/detections/api/lists/api-import-list-items.asciidoc
index 9ba6924b63..f0aeaeb3c1 100644
--- a/docs/detections/api/lists/api-import-list-items.asciidoc
+++ b/docs/detections/api/lists/api-import-list-items.asciidoc
@@ -1,7 +1,7 @@
 [[lists-api-import-list-items]]
 === Import list items
 
-Imports a list of items from a `.txt` or `.csv` file.
+Imports a list of items from a `.txt` or `.csv` file. The maximum file size is 9 million bytes. 
 
 You can import items to a new or existing
 <<lists-api-create-container, list container>>.