diff --git a/HISTORY.rst b/HISTORY.rst
index c51edb1e..c52f9cda 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,13 +1,13 @@
 Release History
 ===============
 
-Unreleased Changes
+2.1.1 (2020-09-16)
 ------------------
 * Fixed a critical bug introduced in 2.1.0 that generated invalid results in
   `convolve_2d` for any raster larger than 256x256.
 * Added an optional parameter, ``target_layer_name`` to
-  ``pygeoprocessing.routing.delineate_watersheds_d8`` for cases where a caller
-  would like to define the output layer name.
+  ``pygeoprocessing.routing.delineate_watersheds_d8`` for cases where a
+  caller would like to define the output layer name.
 
 2.1.0 (2020-08-25)
 ------------------