diff --git a/CHANGES.md b/CHANGES.md
index f63f94f..b55e7d7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,11 @@ Known issues:
   bug](https://github.com/TooTallNate/node-gyp/issues/65).
 
 
+## bunyan 0.23.1 (not yet released)
+
+(nothing yet)
+
+
 ## bunyan 0.23.0
 
 - [issue #139] Fix `bunyan` crash on a log record with `res.header` that is an
diff --git a/bin/bunyan b/bin/bunyan
index 8449bee..edfdd97 100755
--- a/bin/bunyan
+++ b/bin/bunyan
@@ -6,7 +6,7 @@
 // See <https://github.com/trentm/node-bunyan>.
 //
 
-var VERSION = '0.23.0';
+var VERSION = '0.23.1';
 
 var p = console.log;
 var util = require('util');
diff --git a/lib/bunyan.js b/lib/bunyan.js
index 3dfe9be..da73279 100644
--- a/lib/bunyan.js
+++ b/lib/bunyan.js
@@ -7,7 +7,7 @@
  * vim: expandtab:ts=4:sw=4
  */
 
-var VERSION = '0.23.0';
+var VERSION = '0.23.1';
 
 // Bunyan log format version. This becomes the 'v' field on all log records.
 // `0` is until I release a version '1.0.0' of node-bunyan. Thereafter,
diff --git a/package.json b/package.json
index 2e2fe8d..b215ec4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bunyan",
-  "version": "0.23.0",
+  "version": "0.23.1",
   "description": "a JSON Logger library for node.js services",
   "author": "Trent Mick <trentm@gmail.com> (http://trentm.com)",
   "main": "./lib/bunyan.js",