diff --git a/README.md b/README.md
index d12c64d..11a735b 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ To configure the Digger backend deployment with the Helm chart, you'll need to s
 - `digger.annotations`: Add the needed annotations based on your ingress controller configuration.
 - `digger.ingress.host`: The hostname to use for the Ingress resource (e.g., `digger-backend.test`).
 - `digger.ingress.path`: The path for the Ingress resource (e.g., `/`).
+- `digger.ingress.className`: the classname to use for ingress (only considered for kuberetes >= 1.18)
 - `digger.ingress.tls.secretName`: The name of the TLS secret to use for Ingress encryption (e.g., `digger-backend-tls`).
 
 - `digger.secret.*`: Various secrets needed for the application, such as `HTTP_BASIC_AUTH_PASSWORD` and `BEARER_AUTH_TOKEN`. You can provide them directly or reference an existing Kubernetes secret by setting `useExistingSecret` to `true` and specifying `existingSecretName`.
diff --git a/charts/digger-backend/Chart.yaml b/charts/digger-backend/Chart.yaml
index a2d7caa..9f20b67 100644
--- a/charts/digger-backend/Chart.yaml
+++ b/charts/digger-backend/Chart.yaml
@@ -15,10 +15,10 @@ 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: 0.1.5
+version: 0.1.6
 
 # 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.
 # It is recommended to use it with quotes.
-appVersion: "v0.4.2"
+appVersion: "v0.6.42"
diff --git a/charts/digger-backend/templates/backend-deployment.yaml b/charts/digger-backend/templates/backend-deployment.yaml
index d571b35..2cc8a66 100644
--- a/charts/digger-backend/templates/backend-deployment.yaml
+++ b/charts/digger-backend/templates/backend-deployment.yaml
@@ -35,25 +35,25 @@ spec:
             secretKeyRef:
               name: {{ .Values.postgres.secret.existingSecretName }}
               key: postgres-password
+        {{- else if .Values.digger.postgres.existingSecretName }}
+          valueFrom:
+            secretKeyRef:
+              name: {{ .Values.digger.postgres.existingSecretName }}
+              key: {{ .Values.digger.postgres.existingSecretKey }}
         {{- else }}
           valueFrom:
             secretKeyRef:
               name: {{ include "digger-backend.fullname" . }}-postgres-secret
               key: postgres-password
         {{- end }}
-        {{-  if and  .Values.digger.postgres.existingSecretName (not .Values.postgres.enabled) }}
-          valueFrom:
-            secretKeyRef:
-              name: {{ .Values.digger.postgres.existingSecretName }}
-              key: {{ .Values.digger.postgres.existingSecretKey }}
-        {{- end }}
         - name: HTTP_BASIC_AUTH
           value: "1"
         - name: DATABASE_URL
         {{- if .Values.postgres.enabled }}
           value: "postgres://postgres:$(POSTGRES_PASSWORD)@{{ include "digger-backend.fullname" . }}-postgres:5432/postgres?sslmode=disable"
         {{- else }}
-          value: "postgres://{{ .Values.digger.postgres.user }}:$(POSTGRES_PASSWORD)@{{ .Values.digger.postgres.host }}:{{ .Values.digger.postgres.port }}/{{ .Values.digger.postgres.database }}?sslmode=disable"
+          {{- $pg := .Values.digger.postgres }}
+          value: "postgres://{{ $pg.user }}:$(POSTGRES_PASSWORD)@{{ $pg.host }}:{{ $pg.port }}/{{ $pg.database }}?sslmode=disable"
         {{- end }}
         - name: ALLOW_DIRTY
           value: "{{ .Values.digger.postgres.allow_dirty }}"
diff --git a/charts/digger-backend/values.yaml b/charts/digger-backend/values.yaml
index 127a4c8..e79c3b8 100644
--- a/charts/digger-backend/values.yaml
+++ b/charts/digger-backend/values.yaml
@@ -6,7 +6,7 @@ digger:
   # tag: digger backend image tag
   image:
     repository: registry.digger.dev/diggerhq/digger_backend
-    tag: "v0.4.9"
+    tag: "v0.6.42"
 
   # livenessProbe and startupProbe settings
   # https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
@@ -44,12 +44,12 @@ digger:
   #   secretName: name of k8s secret for tls certs (default: "digger-backend-tls")
   ingress:
     enabled: true
-    className: "test"
+    className: ""
     annotations:
       {}
       # kubernetes.io/ingress.class: nginx
     #  kubernetes.io/tls-acme: 'true'
-    host: "example.org"
+    host: ""
     path: /
     tls:
       secretName: "digger-backend-tls"
@@ -85,10 +85,8 @@ digger:
   # configure this section if you want to use an external postgres database
 
   postgres:
-    # if the DB connection string is already in a secret
-    # DB connection string should be in a key names DATABASE_URL
-    # compatible with https://github.com/kloeckner-i/db-operator, for example
-    existingSecretName: "new-pg-creds"
+    # specify the secret name and key to pull the existing postgres database password from
+    existingSecretName: ""
     existingSecretKey: "postgres-password"
 
     # to define connection details in chart:
@@ -102,7 +100,7 @@ digger:
 # configure this section if you want to deploy a postgres db
 # WARNING: use only for test purposes, no persistency has been configured
 postgres:
-  enabled: true
+  enabled: false
   image: postgres
   tag: "14"
   resources: