diff --git a/docs/TODO b/docs/TODO
index ab215c8ae..22c9beb6f 100644
--- a/docs/TODO
+++ b/docs/TODO
@@ -132,6 +132,7 @@
  17.1 Multiplexing
  17.2 SFTP performance
  17.3 Support better than MD5 hostkey hash
+ 17.4 Support CURLOPT_PREQUOTE
 
  18. Command line tool
  18.1 sync