diff --git a/CHANGES.rst b/CHANGES.rst
index 59c359fc3..fc4563ee6 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,6 +3,13 @@ SCICO Release Notes
 ===================
 
 
+Version 0.0.6   (unreleased)
+----------------------------
+
+• No significant changes.
+
+
+
 Version 0.0.5   (2023-12-18)
 ----------------------------
 
diff --git a/scico/__init__.py b/scico/__init__.py
index a8e951b4f..84dea5c0c 100644
--- a/scico/__init__.py
+++ b/scico/__init__.py
@@ -8,7 +8,7 @@
 solving the inverse problems that arise in scientific imaging applications.
 """
 
-__version__ = "0.0.5"
+__version__ = "0.0.6.dev0"
 
 import logging
 import sys