diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index ceecdd079..cedf8b1c6 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -29,7 +29,7 @@
 #define RTMP_SIG_SRS_DOMAIN "ossrs.net"
 
 // The current stable release.
-#define VERSION_STABLE 3
+#define VERSION_STABLE 4
 #define VERSION_STABLE_BRANCH SRS_XSTR(VERSION_STABLE) ".0release"
 
 // For 32bit os, 2G big file limit for unistd io,