diff --git a/docs/source/whatsnew/0.8.4.txt b/docs/source/whatsnew/0.8.4.txt
index 2fa84f31..7dfd070a 100644
--- a/docs/source/whatsnew/0.8.4.txt
+++ b/docs/source/whatsnew/0.8.4.txt
@@ -63,6 +63,8 @@ Enhancements
   subclasses inherit all of the columns from the parent. These columns will be
   new sentinels so you can register them a custom loader (:issue:`924`).
 
+* Added :func:`~zipline.utils.input_validation.coerce`.
+
 Experimental Features
 ~~~~~~~~~~~~~~~~~~~~~