diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 9bcd9939d..c4d6391ff 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -8,6 +8,7 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
+* v4.0, 2021-11-13, Merge [#2729](https://github.com/ossrs/srs/pull/2729): RTC: check audio track exist when negotiate (#2729). v4.0.196
 * v4.0, 2021-11-09, Merge [#2721](https://github.com/ossrs/srs/pull/2721): Rtc2Rtmp: Use RTP timestamp to identify video frames. v4.0.195
 * v4.0, 2021-11-07, Merge [#2711](https://github.com/ossrs/srs/pull/2711): Config: Guess config files by [FHS](https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard). v4.0.194
 * v4.0, 2021-11-07, Merge [#2714](https://github.com/ossrs/srs/pull/2714): DVR: copy req from publish. v4.0.193
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index 6cc4e59d8..8d1e12dc1 100644
--- a/trunk/src/core/srs_core_version4.hpp
+++ b/trunk/src/core/srs_core_version4.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       4
 #define VERSION_MINOR       0
-#define VERSION_REVISION    195
+#define VERSION_REVISION    196
 
 #endif