diff --git a/docs/changes.rst b/docs/changes.rst
index d2bcb09d1..19253ec37 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -3,6 +3,11 @@
 Change Log
 -------------------------
 
+2.3.10 (Unreleased)
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* No changes yet.
+
 2.3.9 (2020-10-15)
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/src/toast/RELEASE b/src/toast/RELEASE
index 5aa7c5232..c72101f67 100644
--- a/src/toast/RELEASE
+++ b/src/toast/RELEASE
@@ -1 +1 @@
-2.3.9
+2.3.10a1