diff --git a/CHANGES b/CHANGES
index 54f2e32..c1b99b8 100644
--- a/CHANGES
+++ b/CHANGES
@@ -7,3 +7,17 @@
 includes a precache of Apache CloudStack 4.2.0 API calls, and should be backward compatible with prior 3.x and 4.x
 CloudStack installations (with the obvious caveat that previous versions will have a subset of the latest API commands /
 parameters).
+
+Version 5.1.0
+=============
+This release includes
+ - support for using username and password instead of / in addition to api key and secret key
+ - Usage of signature version 3 for the api signing process. This reduces the chance of API replay attacks
+ - cleanup based on reporting from PEP8 and Flake8
+If you upgrade from 5.0, then cloudmonkey will ask you to update your config file (~/.cloudmonkey/config)
+Under the [user], you can add
+username = 
+password =
+Under the [server], you can add
+expires = 600
+
diff --git a/cloudmonkey/config.py b/cloudmonkey/config.py
index 7123969..6f043d4 100644
--- a/cloudmonkey/config.py
+++ b/cloudmonkey/config.py
@@ -16,7 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 
-__version__ = "5.0.0"
+__version__ = "5.1.0"
 __description__ = "Command Line Interface for Apache CloudStack"
 __maintainer__ = "The Apache CloudStack Team"
 __maintaineremail__ = "dev@cloudstack.apache.org"