diff --git a/README.md b/README.md
index 7f4d9fe70..581811301 100755
--- a/README.md
+++ b/README.md
@@ -153,6 +153,7 @@ For previous versions, please read:
 
 ## V4 changes
 
+* v4.0, 2020-03-22, Welcome maintainers [Runner365](https://github.com/runner365), [John](https://github.com/xiaozhihong) and [B.P.Y(Bepartofyou)](https://github.com/Bepartofyou). 4.0.15
 * v4.0, 2020-03-22, For [#307][bug #307], support play with WebRTC. 4.0.14
 * v4.0, 2020-03-13, For [#1636][bug #1636], fix bug for mux AAC to ADTS, never overwrite by RTMP sampling rate. 4.0.13
 * v4.0, 2020-03-07, For [#1612][bug #1612], fix crash bug for RTSP. 4.0.12
@@ -1137,6 +1138,8 @@ Maintainers of SRS project:
 * [Winlin](https://github.com/winlinvip): All areas of streaming server and documents.
 * [Wenjie](https://github.com/wenjiegit): The focus of his work is on the [HDS](https://github.com/simple-rtmp-server/srs/wiki/v2_CN_DeliveryHDS) module.
 * [Runner365](https://github.com/runner365): The focus of his work is on the [SRT](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_SRTWiki) module.
+* [John](https://github.com/xiaozhihong): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_RTCWiki) module.
+* [B.P.Y(Bepartofyou)](https://github.com/Bepartofyou): Focus on [WebRTC](https://github.com/simple-rtmp-server/srs/wiki/v4_CN_RTCWiki) module.
 
 A big THANK YOU goes to:
 
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index edf2003ab..d8c3ff8e1 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -43,7 +43,7 @@
 #define RTMP_SIG_SRS_CODE "Leo"
 #define RTMP_SIG_SRS_URL "https://github.com/ossrs/srs"
 #define RTMP_SIG_SRS_LICENSE "MIT"
-#define RTMP_SIG_SRS_AUTHORS "winlin,wenjie,runner365"
+#define RTMP_SIG_SRS_AUTHORS "Winlin,Wenjie,Runner365,John,B.P.Y"
 #define RTMP_SIG_SRS_VERSION SRS_XSTR(VERSION_MAJOR) "." SRS_XSTR(VERSION_MINOR) "." SRS_XSTR(VERSION_REVISION)
 #define RTMP_SIG_SRS_SERVER RTMP_SIG_SRS_KEY "/" RTMP_SIG_SRS_VERSION "(" RTMP_SIG_SRS_CODE ")"
 
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index 02cc62335..06021c5a3 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 14
+#define SRS_VERSION4_REVISION 15
 
 #endif