diff --git a/doc/APIchanges b/doc/APIchanges
index 904e3462f7..aa5729196e 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,12 @@ libavutil:   2011-04-18
 
 API changes, most recent first:
 
+2012-01-25 - lavf 53.22.0
+  f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
+          buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
+          muxers supporting it (av_write_frame makes sure it is called
+          only for muxers with this flag).
+
 2012-01-15 - lavc 53.34.0
   New audio encoding API:
   b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio