readme: backwards compatibility notice
diff --git a/README.md b/README.md
index 41e23ef..64849d8 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,10 @@
 # Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/Sirupsen/logrus.svg?branch=master)](https://travis-ci.org/Sirupsen/logrus)
 
 Logrus is a structured logger for Go (golang), completely API compatible with
-the standard library logger. [Godoc][godoc].
+the standard library logger. [Godoc][godoc]. **Please note the Logrus API is not
+yet stable (pre 1.0), the core API is unlikely change much but please version
+control your Logrus to make sure you aren't fetching latest `master` on every
+build.**
 
 Nicely color-coded in development (when a TTY is attached, otherwise just
 plain text):