diff --git a/RELEASE.md b/RELEASE.md
index f1309305c..5bfa04623 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,6 +1,6 @@
 # Release Note 🍻
 
-EMQX Operator 2.2.1-rc.1 is released.
+EMQX Operator 2.2.1-rc.2 is released.
 
 ## Supported version
 + apps.emqx.io/v2beta1
@@ -21,6 +21,8 @@ EMQX Operator 2.2.1-rc.1 is released.
 
   + Fix always update statefulSet when set volume template in EMQX customer resource.
 
+  + Fix nil pointer error caused by not finding statefulSet in certain situations.
+
 ## How to install/upgrade EMQX Operator 💡
 
 > Need make sure the [cert-manager](https://cert-manager.io/) is ready
diff --git a/deploy/charts/emqx-operator/Chart.yaml b/deploy/charts/emqx-operator/Chart.yaml
index 968ae8dad..9551bafcf 100644
--- a/deploy/charts/emqx-operator/Chart.yaml
+++ b/deploy/charts/emqx-operator/Chart.yaml
@@ -15,9 +15,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.2.1-rc.1
+version: 2.2.1-rc.2
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
-appVersion: 2.2.1-rc.1
+appVersion: 2.2.1-rc.2