diff --git a/README.md b/README.md
index 44789b094..9b1c60878 100755
--- a/README.md
+++ b/README.md
@@ -92,7 +92,7 @@ A big `THANK YOU` also goes to:
 
 ## Releases
 
-* 2021-10-12, Release [v4.0.176](https://github.com/ossrs/srs/releases/tag/v4.0.176), 4.0 dev6, v4.0.176, 143675 lines.
+* 2021-10-12, Release [v4.0.177](https://github.com/ossrs/srs/releases/tag/v4.0.177), 4.0 dev6, v4.0.177, 143686 lines.
 * 2021-09-05, Release [v4.0.161](https://github.com/ossrs/srs/releases/tag/v4.0.161), 4.0 dev5, v4.0.161, 145865 lines.
 * 2021-08-15, Release [v4.0.156](https://github.com/ossrs/srs/releases/tag/v4.0.156), 4.0 dev4, v4.0.156, 145490 lines.
 * 2021-08-14, Release [v4.0.153](https://github.com/ossrs/srs/releases/tag/v4.0.153), 4.0 dev3, v4.0.153, 145506 lines.
diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 1ec33f8d0..3f3413d75 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -27,6 +27,7 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
+* v4.0, 2021-10-12, Merge [#2550](https://github.com/ossrs/srs/pull/2550): API use publish params. v4.0.177
 * v4.0, 2021-10-12, Merge [#2549](https://github.com/ossrs/srs/pull/2549): Fix duration issue for HLS on_hls. v4.0.176
 * v4.0, 2021-10-11, Fix [#1641](https://github.com/ossrs/srs/issues/1641), HLS/RTC picture corrupt for SPS/PPS lost. v4.0.175
 * v4.0, 2021-10-11, RTC: Refine config, aac to rtmp_to_rtc, bframe to keep_bframe. v4.0.174
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index 5721b5e03..0d5e98ffb 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    176
+#define VERSION_REVISION    177
 
 #endif