diff --git a/README.md b/README.md
index 46194a5052..56658c3dcf 100755
--- a/README.md
+++ b/README.md
@@ -153,6 +153,7 @@ For previous versions, please read:
 
 ## V4 changes
 
+* v4.0, 2020-02-21, For [#1598][bug #1598], support SLB health checking by TCP. 4.0.8
 * v4.0, 2020-02-19, For [#1579][bug #1579], support rolling update of k8s. 4.0.7
 * v4.0, 2020-02-18, For [#1579][bug #1579], support start/final wait for gracefully quit. 4.0.6
 * v4.0, 2020-02-18, For [#1579][bug #1579], support gracefully quit and force to. 4.0.5
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index f6717ca54a..f5d2ad53cb 100644
--- a/trunk/src/core/srs_core_version4.hpp
+++ b/trunk/src/core/srs_core_version4.hpp
@@ -24,6 +24,6 @@
 #ifndef SRS_CORE_VERSION4_HPP
 #define SRS_CORE_VERSION4_HPP
 
-#define SRS_VERSION4_REVISION 7
+#define SRS_VERSION4_REVISION 8
 
 #endif