diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index b7d4e0e5e3..5e8beed7fb 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -36,3 +36,10 @@ Deprecation Notices
 * The following fields have been deprecated in rte_eth_stats:
   imissed, ibadcrc, ibadlen, imcasts, fdirmatch, fdirmiss,
   tx_pause_xon, rx_pause_xon, tx_pause_xoff, rx_pause_xoff
+
+* API for flow director filters has been replaced by rte_eth_dev_filter_ctrl.
+  Following old API is deprecated and will be removed with version 2.2 without
+  backward compatibility.
+  Functions: rte_eth_dev_fdir_*.
+  Structures: rte_fdir_*, rte_eth_fdir.
+  Enums: rte_l4type, rte_iptype.