diff --git a/CHANGES.rst b/CHANGES.rst
index 892f3bf..4c2575d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,6 +3,13 @@ Changes
 =======
 
 
+5.6.1 (2020-09-17)
+------------------
+
+- Improve test dependency management and upgrade black code formatter.
+  [smithdc1]
+
+
 5.6.0 (2020-09-12)
 ------------------