diff --git a/.mailmap b/.mailmap
index b592de76b..83bb03cd0 100644
--- a/.mailmap
+++ b/.mailmap
@@ -88,6 +88,7 @@ Michael Katsoulis <michaelkatsoulis88@gmail.com>
 Mike Brown <brownwm@us.ibm.com> <mikebrow@users.noreply.github.com>
 Mohammad Asif Siddiqui <mohammad.asif.siddiqui1@huawei.com>
 Ng Yang <wssccc@qq.com>
+Ning Li <ning.a.li@transwarp.io>
 ningmingxiao <ning.mingxiao@zte.com.cn>
 Nishchay Kumar <mrawesomenix@gmail.com>
 Oliver Stenbom <oliver@stenbom.eu> <ostenbom@pivotal.io>
diff --git a/releases/v1.6.0-rc.toml b/releases/v1.6.0-rc.toml
index 2060a19b7..5740f79d3 100644
--- a/releases/v1.6.0-rc.toml
+++ b/releases/v1.6.0-rc.toml
@@ -25,6 +25,7 @@ support to increase overall compatibility and stability.
 * **Add runc shim support for core scheduling** ([#6011](https://github.com/containerd/containerd/pull/6011))
 * **Update shim client connect attempt to fail fast when shim errors** ([#6031](https://github.com/containerd/containerd/pull/6031))
 * **Add support for absolute path to shim binaries** ([#6206](https://github.com/containerd/containerd/pull/6206))
+* **Update runc to v1.1.0** ([#6375](https://github.com/containerd/containerd/pull/6375))
 
 #### Windows
 
@@ -46,12 +47,11 @@ support to increase overall compatibility and stability.
 
 #### Other
 
-* **Add a shared namespace label for cross-namespace content sharing** ([#5043](https://github.com/containerd/containerd/pull/5043))
 * **Add support for client TLS Auth for grpc** ([#5606](https://github.com/containerd/containerd/pull/5606))
 * **Add xfs support for devicemapper snapshotter** ([#5610](https://github.com/containerd/containerd/pull/5610))
 * **Add metric exposing build version and revision** ([#5965](https://github.com/containerd/containerd/pull/5965))
-* **Add OpenTelemetry trace injection to grpc client** ([#5992](https://github.com/containerd/containerd/pull/5992))
 * **Add support for custom fs options in devmapper snapshotter** ([#6122](https://github.com/containerd/containerd/pull/6122))
+* **Update introspection service to show GRPC plugins** ([#6432](https://github.com/containerd/containerd/pull/6432))
 
 #### Client
 
diff --git a/version/version.go b/version/version.go
index 63a4e46a6..030448a6b 100644
--- a/version/version.go
+++ b/version/version.go
@@ -23,7 +23,7 @@ var (
 	Package = "github.com/containerd/containerd"
 
 	// Version holds the complete version number. Filled in at linking time.
-	Version = "1.6.0-rc.0+unknown"
+	Version = "1.6.0-rc.1+unknown"
 
 	// Revision is filled with the VCS (e.g. git) revision being used to build
 	// the program at linking time.