diff --git a/Milestone.md b/Milestone.md
index 202314a..af0beea 100644
--- a/Milestone.md
+++ b/Milestone.md
@@ -2,6 +2,8 @@
   * `SnappyIndexer` for parallel compression/decompression
   * CUI commands (snap/unsnap)
 
+Since vesion 1.1.0.x, Java 6 (1.6) or higher is required.
+
 ## snappy-java-1.1.0  (17 October 2013)
   * Add Snappy framed format support (SnappyFramedInputStream, SnappyFramedOutputStream)
   * Add SunOS support