diff --git a/CHANGELOG b/CHANGELOG
index fc0cdc92e61..481ba266ed5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -57,6 +57,7 @@ Yosys 0.9 .. Yosys 0.9-dev
       always_latch and always_ff)
     - Added "xilinx_dffopt" pass
     - Added "scratchpad" pass
+    - Added "abc9 -dff"
     - Added "synth_xilinx -dff"
 
 Yosys 0.8 .. Yosys 0.9