diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index 11d8e62a1..99a8b890f 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -36,6 +36,7 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
+* v4.0, 2022-03-15, Merge [#2966](https://github.com/ossrs/srs/pull/2966): Bugfix: Fix rtcp nack blp encode bug (#2966). v4.0.248
 * v4.0, 2022-03-07, RTC: Identify the WebRTC publisher in param for hooks. v4.0.247
 * v4.0, 2022-03-07, SRT: Append vhost to stream, not app. v4.0.246
 * v4.0, 2022-02-15, Fix warnings for uuid. v4.0.245
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index 094ab0701..5f9731ab5 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    247
+#define VERSION_REVISION    248
 
 #endif