diff --git a/cmd/kratos/version.go b/cmd/kratos/version.go
index c18e31daf..fd88039d2 100644
--- a/cmd/kratos/version.go
+++ b/cmd/kratos/version.go
@@ -1,4 +1,4 @@
 package main
 
 // release is the current kratos tool version.
-const release = "v2.1.5"
+const release = "v2.2.0"
diff --git a/cmd/protoc-gen-go-errors/version.go b/cmd/protoc-gen-go-errors/version.go
index 7e593a748..a694fdec7 100644
--- a/cmd/protoc-gen-go-errors/version.go
+++ b/cmd/protoc-gen-go-errors/version.go
@@ -1,4 +1,4 @@
 package main
 
 // release is the current protoc-gen-go-errors version.
-const release = "v2.1.5"
+const release = "v2.2.0"
diff --git a/cmd/protoc-gen-go-http/version.go b/cmd/protoc-gen-go-http/version.go
index 146297b96..0bc08582f 100644
--- a/cmd/protoc-gen-go-http/version.go
+++ b/cmd/protoc-gen-go-http/version.go
@@ -1,4 +1,4 @@
 package main
 
 // release is the current protoc-gen-go-http version.
-const release = "v2.1.5"
+const release = "v2.2.0"
diff --git a/contrib/config/apollo/go.mod b/contrib/config/apollo/go.mod
index 3631b634c..fb5cc5b1d 100644
--- a/contrib/config/apollo/go.mod
+++ b/contrib/config/apollo/go.mod
@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	github.com/apolloconfig/agollo/v4 v4.1.0
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 )
 
 require (
diff --git a/contrib/config/consul/go.mod b/contrib/config/consul/go.mod
index 38f427f0e..d6f052de4 100644
--- a/contrib/config/consul/go.mod
+++ b/contrib/config/consul/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/config/consul/v2
 go 1.15
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/hashicorp/consul/api v1.10.0
 )
 
diff --git a/contrib/config/etcd/go.mod b/contrib/config/etcd/go.mod
index f71d7832b..d61acef64 100644
--- a/contrib/config/etcd/go.mod
+++ b/contrib/config/etcd/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/config/etcd/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	go.etcd.io/etcd/client/v3 v3.5.0
 	google.golang.org/grpc v1.44.0
 )
diff --git a/contrib/config/kubernetes/go.mod b/contrib/config/kubernetes/go.mod
index a1b37c200..983d633d2 100644
--- a/contrib/config/kubernetes/go.mod
+++ b/contrib/config/kubernetes/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/config/kubernetes/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	k8s.io/api v0.23.3
 	k8s.io/apimachinery v0.23.3
 	k8s.io/client-go v0.23.3
diff --git a/contrib/config/nacos/go.mod b/contrib/config/nacos/go.mod
index 926eb1fc1..8e7c607a3 100644
--- a/contrib/config/nacos/go.mod
+++ b/contrib/config/nacos/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/config/nacos/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/nacos-group/nacos-sdk-go v1.0.9
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
diff --git a/contrib/encoding/msgpack/go.mod b/contrib/encoding/msgpack/go.mod
index f68df4d91..691916984 100644
--- a/contrib/encoding/msgpack/go.mod
+++ b/contrib/encoding/msgpack/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/encoding/msgpack/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/vmihailenco/msgpack/v5 v5.3.4
 )
 
diff --git a/contrib/log/aliyun/go.mod b/contrib/log/aliyun/go.mod
index 89b8de332..d401f8096 100644
--- a/contrib/log/aliyun/go.mod
+++ b/contrib/log/aliyun/go.mod
@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	github.com/aliyun/aliyun-log-go-sdk v0.1.27
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	google.golang.org/protobuf v1.27.1
 )
 
diff --git a/contrib/log/fluent/go.mod b/contrib/log/fluent/go.mod
index 4cb3fabd3..5b097cb45 100644
--- a/contrib/log/fluent/go.mod
+++ b/contrib/log/fluent/go.mod
@@ -5,7 +5,7 @@ go 1.16
 require (
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
 	github.com/fluent/fluent-logger-golang v1.5.0
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/kr/pretty v0.3.0 // indirect
 	github.com/tinylib/msgp v1.1.6 // indirect
 )
diff --git a/contrib/log/zap/go.mod b/contrib/log/zap/go.mod
index d1f969093..6a45ed556 100644
--- a/contrib/log/zap/go.mod
+++ b/contrib/log/zap/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/log/zap/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	go.uber.org/zap v1.19.0
 )
 
diff --git a/contrib/metrics/datadog/go.mod b/contrib/metrics/datadog/go.mod
index 2e33cd558..8e2364712 100644
--- a/contrib/metrics/datadog/go.mod
+++ b/contrib/metrics/datadog/go.mod
@@ -5,7 +5,7 @@ go 1.16
 require (
 	github.com/DataDog/datadog-go v4.8.1+incompatible
 	github.com/Microsoft/go-winio v0.5.0 // indirect
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 
 )
 
diff --git a/contrib/metrics/prometheus/go.mod b/contrib/metrics/prometheus/go.mod
index 6fbbcc183..8b311cb02 100644
--- a/contrib/metrics/prometheus/go.mod
+++ b/contrib/metrics/prometheus/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/metrics/prometheus/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/prometheus/client_golang v1.9.0
 )
 
diff --git a/contrib/registry/consul/go.mod b/contrib/registry/consul/go.mod
index f0baa9283..c35c60181 100644
--- a/contrib/registry/consul/go.mod
+++ b/contrib/registry/consul/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/registry/consul/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/hashicorp/consul/api v1.9.1
 )
 
diff --git a/contrib/registry/discovery/go.mod b/contrib/registry/discovery/go.mod
index b04a74723..ea1acde3c 100644
--- a/contrib/registry/discovery/go.mod
+++ b/contrib/registry/discovery/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/registry/discovery/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/go-resty/resty/v2 v2.6.0
 	github.com/pkg/errors v0.9.1
 )
diff --git a/contrib/registry/etcd/go.mod b/contrib/registry/etcd/go.mod
index e201fab64..5755e6352 100644
--- a/contrib/registry/etcd/go.mod
+++ b/contrib/registry/etcd/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/registry/etcd/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	go.etcd.io/etcd/client/v3 v3.5.0
 	google.golang.org/grpc v1.44.0
 )
diff --git a/contrib/registry/kubernetes/go.mod b/contrib/registry/kubernetes/go.mod
index 5056709fd..11011f773 100644
--- a/contrib/registry/kubernetes/go.mod
+++ b/contrib/registry/kubernetes/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/registry/kubernetes/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/json-iterator/go v1.1.12
 	k8s.io/api v0.23.1
 	k8s.io/apimachinery v0.23.1
diff --git a/contrib/registry/nacos/go.mod b/contrib/registry/nacos/go.mod
index 0c219d570..f97b40613 100644
--- a/contrib/registry/nacos/go.mod
+++ b/contrib/registry/nacos/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/registry/nacos/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/nacos-group/nacos-sdk-go v1.0.9
 )
 
diff --git a/contrib/registry/polaris/go.mod b/contrib/registry/polaris/go.mod
index 096caed0c..5361b2872 100644
--- a/contrib/registry/polaris/go.mod
+++ b/contrib/registry/polaris/go.mod
@@ -1,32 +1,10 @@
 module github.com/go-kratos/kratos/contrib/registry/polaris/v2
 
-go 1.17
+go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/polarismesh/polaris-go v1.0.1
 )
 
-require (
-	github.com/ghodss/yaml v1.0.0 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/google/uuid v1.3.0 // indirect
-	github.com/hashicorp/errwrap v1.0.0 // indirect
-	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/natefinch/lumberjack v2.0.0+incompatible // indirect
-	github.com/spaolacci/murmur3 v1.1.0 // indirect
-	go.uber.org/atomic v1.7.0 // indirect
-	go.uber.org/multierr v1.6.0 // indirect
-	go.uber.org/zap v1.19.1 // indirect
-	golang.org/x/net v0.0.0-20210917221730-978cfadd31cf // indirect
-	golang.org/x/sys v0.0.0-20210816074244-15123e1e1f71 // indirect
-	golang.org/x/text v0.3.6 // indirect
-	google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350 // indirect
-	google.golang.org/grpc v1.44.0 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
-	gopkg.in/yaml.v2 v2.3.0 // indirect
-)
-
 replace github.com/go-kratos/kratos/v2 => ../../../
diff --git a/contrib/registry/zookeeper/go.mod b/contrib/registry/zookeeper/go.mod
index 2f5af9bc2..150983168 100644
--- a/contrib/registry/zookeeper/go.mod
+++ b/contrib/registry/zookeeper/go.mod
@@ -3,7 +3,7 @@ module github.com/go-kratos/kratos/contrib/registry/zookeeper/v2
 go 1.16
 
 require (
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/go-zookeeper/zk v1.0.2
 )
 
diff --git a/examples/go.mod b/examples/go.mod
index c7d74336c..f4c97ce6e 100644
--- a/examples/go.mod
+++ b/examples/go.mod
@@ -15,7 +15,7 @@ require (
 	github.com/go-kratos/kratos/contrib/registry/etcd/v2 v2.0.0-00010101000000-000000000000
 	github.com/go-kratos/kratos/contrib/registry/nacos/v2 v2.0.0-00010101000000-000000000000
 	github.com/go-kratos/kratos/contrib/registry/zookeeper/v2 v2.0.0-00010101000000-000000000000
-	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/go-kratos/kratos/v2 v2.2.0
 	github.com/go-kratos/swagger-api v1.0.0
 	github.com/go-redis/redis/extra/redisotel v0.3.0
 	github.com/go-redis/redis/v8 v8.11.2
diff --git a/version.go b/version.go
index eaf82f050..c860c052e 100644
--- a/version.go
+++ b/version.go
@@ -1,4 +1,4 @@
 package kratos
 
 // Release is the current kratos version.
-const Release = "v2.1.5"
+const Release = "v2.2.0"