diff --git a/README.md b/README.md
index 521591734..faee9efea 100755
--- a/README.md
+++ b/README.md
@@ -158,6 +158,7 @@ For previous versions, please read:
 
 ## V4 changes
 
+* v4.0, 2020-04-03, For [#307][bug #307], build SRTP with openssl to improve performance. 4.0.19
 * v4.0, 2020-03-31, For [#1500][bug #1500], support push stream by GB28181. 4.0.18
 * v4.0, 2020-03-31, Play stream by WebRTC on iOS/Android/PC browser. 4.0.17
 * v4.0, 2020-03-28, Support multiple OS/Platform build cache. 4.0.16
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index ddc59887f..52f8e2196 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 18
+#define SRS_VERSION4_REVISION 19
 
 #endif