diff --git a/doc/APIchanges b/doc/APIchanges
index eb1a93b32e8a2d5a1be88a20f987df1825d0319c..5503bdcc477cca508b44c4572c5d32b10b88ee8c 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -12,6 +12,9 @@ libavutil:   2009-03-08
 
 API changes, most recent first:
 
+2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
+  Add interlaced and top_field_first fields to AVFilterPicRef.
+
 2010-05-01 - r23002 - lavf 52.62.0 - probe function
   Add av_probe_input_format2 to API, it allows ignoring probe
   results below given score and returns the actual probe score.