diff --git a/HISTORY.rst b/HISTORY.rst
index 3b816f9e..b89bfdab 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,11 @@ Release History
 
 Unreleased Changes
 ------------------
+* Added a D8 stream extraction function at
+  ``pygeoprocessing.routing.extract_streams_d8`` which takes a D8 flow
+  accumulation raster and a flow accumulation threshold, setting all pixels
+  with accumulation above that threshold to 1 and all other valid pixels to 0.
+  https://github.com/natcap/pygeoprocessing/issues/272
 * Win32 wheels of PyGeoprocessing are no longer created through our GitHub
   Actions workflows and will no longer be produced or distributed as part of
   our release checklist.  For details (and metrics!) see: