diff --git a/docs/changes.rst b/docs/changes.rst
index c292a96..faccbed 100644
--- a/docs/changes.rst
+++ b/docs/changes.rst
@@ -17,6 +17,29 @@ Change log
 ----------
 
 
+Version 1.6.1.dev1
+^^^^^^^^^^^^^^^^^^
+
+Released: not yet
+
+**Incompatible changes:**
+
+**Deprecations:**
+
+**Bug fixes:**
+
+**Enhancements:**
+
+**Cleanup:**
+
+**Known issues:**
+
+* See `list of open issues`_.
+
+.. _`list of open issues`: https://github.com/zhmcclient/zhmc-prometheus-exporter/issues
+
+
+
 Version 1.6.0
 ^^^^^^^^^^^^^
 
diff --git a/zhmc_prometheus_exporter/_version.py b/zhmc_prometheus_exporter/_version.py
index a8c238a..a562967 100644
--- a/zhmc_prometheus_exporter/_version.py
+++ b/zhmc_prometheus_exporter/_version.py
@@ -25,4 +25,4 @@
 #:
 #: * "M.N.P.dev1": A not yet released version M.N.P
 #: * "M.N.P": A released version M.N.P
-__version__ = '1.6.0'
+__version__ = '1.6.1.dev1'