diff --git a/README.md b/README.md
index fd3bd032..57f98ab0 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,8 @@ Help to translate shadowsocks: http://crowdin.net/project/shadowsocks/invite
 
 * JDK 1.7+
 * SBT 0.13.0+
-* Android SDK r21+
-* Android NDK r9+
+* Android SDK r24+
+* Android NDK r10d+
 
 ### BUILD