diff --git a/CHANGES.md b/CHANGES.md
index 5eab482..8a923d4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -8,6 +8,9 @@ Known issues:
 
 ## bunyan 1.3.1 (not yet released)
 
+- Export `bunyan.RotatingFileStream` which is needed if one wants to
+  customize it. E.g. see issue #194.
+
 - [pull #122] Source Map support for caller line position for [the "src"
   field](https://github.com/trentm/node-bunyan#src). This could be interesting
   for [CoffeeScript](http://coffeescript.org/documentation/docs/sourcemap.html)
diff --git a/lib/bunyan.js b/lib/bunyan.js
index 51c7521..1329621 100644
--- a/lib/bunyan.js
+++ b/lib/bunyan.js
@@ -1394,6 +1394,7 @@ module.exports.createLogger = function createLogger(options) {
 };
 
 module.exports.RingBuffer = RingBuffer;
+module.exports.RotatingFileStream = RotatingFileStream;
 
 // Useful for custom `type == 'raw'` streams that may do JSON stringification
 // of log records themselves. Usage: