diff --git a/Cargo.lock b/Cargo.lock
index c31196c..3339562 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -507,7 +507,7 @@ dependencies = [
 
 [[package]]
 name = "controller"
-version = "0.12.7"
+version = "0.12.8"
 dependencies = [
  "actix-web",
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index 7d65bf2..499404f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "controller"
-version = "0.12.7"
+version = "0.12.8"
 authors = ["clux <sszynrae@gmail.com>"]
 edition = "2021"
 default-run = "controller"
diff --git a/charts/doc-controller/Chart.yaml b/charts/doc-controller/Chart.yaml
index 30b4cfb..648b5e5 100644
--- a/charts/doc-controller/Chart.yaml
+++ b/charts/doc-controller/Chart.yaml
@@ -3,4 +3,4 @@ name: doc-controller
 description: document controller sample chart
 type: application
 version: 0.1.0
-appVersion: "0.12.5"
+appVersion: 0.12.8
diff --git a/justfile b/justfile
index 2437f95..5ce402d 100644
--- a/justfile
+++ b/justfile
@@ -53,6 +53,7 @@ build-base: (_build "")
 # docker build with telemetry
 build-otel: (_build "telemetry")
 
+
 # local helper for test-telemetry and run-telemetry
 # forward grpc otel port from svc/promstack-tempo in monitoring
 forward-tempo:
diff --git a/release.toml b/release.toml
new file mode 100644
index 0000000..0bfc678
--- /dev/null
+++ b/release.toml
@@ -0,0 +1,18 @@
+# Release process :: cargo-release >= 0.23
+#
+# Dependencies: https://kube.rs/tools
+#
+# 1. cargo release minor --execute
+
+# Reference
+# https://github.com/sunng87/cargo-release/blob/master/docs/reference.md
+
+pre-release-replacements = [
+  {file="charts/doc-controller/Chart.yaml", search="appVersion: .*", replace="appVersion: {{version}}"},
+]
+pre-release-commit-message = "release {{version}}"
+push = false
+tag = true
+tag-name = "{{version}}"
+sign-commit = true
+sign-tag = true
diff --git a/yaml/deployment.yaml b/yaml/deployment.yaml
index 9e822ed..0e3874e 100644
--- a/yaml/deployment.yaml
+++ b/yaml/deployment.yaml
@@ -8,7 +8,7 @@ metadata:
   labels:
     app: doc-controller
     app.kubernetes.io/name: doc-controller
-    app.kubernetes.io/version: "0.12.5"
+    app.kubernetes.io/version: "0.12.8"
   namespace: default
 automountServiceAccountToken: true
 ---
@@ -51,7 +51,7 @@ metadata:
   labels:
     app: doc-controller
     app.kubernetes.io/name: doc-controller
-    app.kubernetes.io/version: "0.12.5"
+    app.kubernetes.io/version: "0.12.8"
 spec:
   type: ClusterIP
   ports:
@@ -71,7 +71,7 @@ metadata:
   labels:
     app: doc-controller
     app.kubernetes.io/name: doc-controller
-    app.kubernetes.io/version: "0.12.5"
+    app.kubernetes.io/version: "0.12.8"
 spec:
   replicas: 1
   selector:
@@ -89,7 +89,7 @@ spec:
         {}
       containers:
       - name: doc-controller
-        image: clux/controller:0.12.5
+        image: clux/controller:0.12.8
         imagePullPolicy: IfNotPresent
         securityContext:
           {}