diff --git a/README.md b/README.md
index 0aa68cf1c..654e68196 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@ Simple, Secure, Scalable Blockchain Platform
 
 [![CircleCI](https://circleci.com/gh/tendermint/tendermint.svg?style=svg)](https://circleci.com/gh/tendermint/tendermint)
 
+_NOTE: This is yet pre-alpha non-production-quality software._
+
 ## Resources
 
 ### Tendermint Core