diff --git a/deploy.sh b/deploy.sh
index a223751..a00f946 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -32,17 +32,26 @@ function configure_cert_manager() {
     helm install cert-manager jetstack/cert-manager \
         --namespace cert-manager \
         --create-namespace \
-        --version v1.14.2
+        --version v1.13.3
 }
 
 function configure_postgres() {
-    helm install --create-namespace \
-        --namespace portfolio stackgres-operator \
-        --set-string adminui.service.type=ClusterIP \
-        https://stackgres.io/downloads/stackgres-k8s/stackgres/latest/helm/stackgres-operator.tgz
+    helm repo add cnpg https://cloudnative-pg.github.io/charts
+    helm upgrade --install cnpg \
+        --namespace portfolio \
+        --create-namespace \
+        cnpg/cloudnative-pg
 
-    kubectl wait deployment -l group=stackgres.io --for=condition=Available -n portfolio
-    kubectl apply -f ./deployment/postgres/sgcluster.yaml
+    kubectl wait --for=condition=available \
+        --timeout=600s \
+        deployment.apps/cnpg-cloudnative-pg \
+        -n portfolio
+
+    kubectl apply -f ./deployment/postgres/cn-cluster.yaml
+    kubectl wait --for=condition=Ready \
+        --timeout=600s \
+        cluster/postgres-cn-cluster \
+        -n portfolio
 }
 
 function application_deploy() {
@@ -100,7 +109,7 @@ function main() {
             minikube kubectl -- $@
         }
 
-        minikube start --driver kvm2 --cpus 4 --memory 3Gib
+        minikube start --driver kvm2 --cpus 4 --memory 4Gib
         minikube addons enable ingress-dns
         minikube addons enable ingress
 
@@ -127,10 +136,8 @@ function main() {
             ./deployment/cert-manager/cert-manager-certificate.yaml
 
         echo "http://$(/usr/bin/minikube ip)"
-        
-    else
 
-        configure_nginx_ingress
+    else
 
         kubectl apply -f \
             ./deployment/cert-manager/cert-manager-issuer.yaml
diff --git a/deployment/backend/backend-config.yaml b/deployment/backend/backend-config.yaml
index ce0be2d..f8b54f6 100644
--- a/deployment/backend/backend-config.yaml
+++ b/deployment/backend/backend-config.yaml
@@ -5,4 +5,5 @@ metadata:
     name: backend-config
 data:
     backend_url: backend-service
-    backend_port: "8070"
\ No newline at end of file
+    backend_port: "8070"
+    backend_db_name: portfolio
\ No newline at end of file
diff --git a/deployment/backend/backend.yaml b/deployment/backend/backend.yaml
index e54b742..d1aa878 100644
--- a/deployment/backend/backend.yaml
+++ b/deployment/backend/backend.yaml
@@ -18,12 +18,12 @@ spec:
                   image: yoshiunfriendly/backend-hideyoshi.com
                   imagePullPolicy: Always
                   resources:
-                    requests:
-                      memory: "256Mi"
-                      cpu: "250m"
-                    limits:
-                      memory: "256Mi"
-                      cpu: "250m"
+                      requests:
+                          memory: "256Mi"
+                          cpu: "250m"
+                      limits:
+                          memory: "256Mi"
+                          cpu: "250m"
                   ports:
                       - containerPort: 8070
                   env:
@@ -119,15 +119,15 @@ spec:
 
                       - name: POSTGRES_URL
                         valueFrom:
-                            configMapKeyRef:
-                                name: postgres-config
-                                key: postgres_url
+                            secretKeyRef:
+                                name: postgres-cn-cluster-app
+                                key: host
 
                       - name: POSTGRES_DB
                         valueFrom:
                             secretKeyRef:
-                                name: postgres-secret
-                                key: postgresDatabase
+                                name: postgres-cn-cluster-app
+                                key: dbname
 
                       - name: DATABASE_URL
                         value: "postgresql://$(POSTGRES_URL):5432/$(POSTGRES_DB)"
@@ -135,14 +135,14 @@ spec:
                       - name: DATABASE_USERNAME
                         valueFrom:
                             secretKeyRef:
-                                name: postgres-secret
-                                key: postgresUser
+                                name: postgres-cn-cluster-app
+                                key: user
 
                       - name: DATABASE_PASSWORD
                         valueFrom:
                             secretKeyRef:
-                                name: postgres-secret
-                                key: postgresPassword
+                                name: postgres-cn-cluster-app
+                                key: password
 
                       - name: REDIS_URL
                         valueFrom:
diff --git a/deployment/postgres/cn-cluster.yaml b/deployment/postgres/cn-cluster.yaml
new file mode 100644
index 0000000..8480dab
--- /dev/null
+++ b/deployment/postgres/cn-cluster.yaml
@@ -0,0 +1,23 @@
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+    name: postgres-cn-cluster
+    namespace: portfolio
+spec:
+    instances: 3
+    primaryUpdateStrategy: unsupervised
+    imageName: ghcr.io/cloudnative-pg/postgresql:14.10-18
+
+    storage:
+        size: 5Gi
+
+    resources:
+        requests:
+            memory: "32Mi"
+            cpu: "50m"
+        limits:
+            memory: "128Mi"
+            cpu: "100m"
+
+    monitoring:
+        enablePodMonitor: true
diff --git a/deployment/postgres/sgcluster.yaml b/deployment/postgres/sgcluster.yaml
deleted file mode 100644
index 576c420..0000000
--- a/deployment/postgres/sgcluster.yaml
+++ /dev/null
@@ -1,27 +0,0 @@
-apiVersion: stackgres.io/v1
-kind: SGInstanceProfile
-metadata:
-    namespace: portfolio
-    name: postgres-portfolio-profile
-spec:
-    cpu: "250m"
-    memory: "512Mi"
-    containers:
-        pg-main-container:
-            cpu: "250m"
-            memory: "512Mi" 
-
----
-apiVersion: stackgres.io/v1
-kind: SGCluster
-metadata:
-    namespace: portfolio
-    name: postgres-cluster
-spec:
-    instances: 1
-    postgres:
-        version: "latest"
-    pods:
-        persistentVolume:
-            size: "5Gi"
-    sgInstanceProfile: postgres-portfolio-profile