diff --git a/EVENTS.txt b/EVENTS.txt
index caa99f9638..cfba97403b 100644
--- a/EVENTS.txt
+++ b/EVENTS.txt
@@ -1451,6 +1451,9 @@ StartResizeImageFile: Hook to resize an image and output it to a file. No matchi
 - $outpath:   string with output filepath
 - $box:       array with size ('width', 'height') and boundary box('x', 'y', 'w', 'h').
 
+FillImageFileMetadata: Get more metadata about the ImageFile if it is perhaps not a real local file
+- $imagefile    ImageFile object which we're getting metadata for (such as animated status, width/height etc.)
+
 StartShowAttachmentRepresentation: Attachment representation, full file (or in rare cases thumbnails/previews).
 - $out:     HTMLOutputter class to use for outputting HTML.
 - $file:    'File' object which we're going to show representation for.