diff --git a/charts/queen/Chart.yaml b/charts/queen/Chart.yaml
index 4413926..b6c1b5b 100644
--- a/charts/queen/Chart.yaml
+++ b/charts/queen/Chart.yaml
@@ -5,9 +5,9 @@ description: A Helm chart for Queen API, UI and DB
 dependencies:
   - name: postgresql
     condition: postgresql.enabled
-    version: 12.1.9
+    version: 14.10.0
     repository: https://charts.bitnami.com/bitnami
 
 type: application
-version: 0.4.1
-appVersion: "1.16.0"
+version: 0.5.0
+appVersion: "4.0.0"
diff --git a/charts/queen/templates/api/deployment.yaml b/charts/queen/templates/api/deployment.yaml
index 84853f3..a380ffc 100644
--- a/charts/queen/templates/api/deployment.yaml
+++ b/charts/queen/templates/api/deployment.yaml
@@ -26,6 +26,12 @@ spec:
       serviceAccountName: {{ include "queen.api.serviceAccountName" . }}
       securityContext:
         {{- toYaml .Values.api.podSecurityContext | nindent 8 }}
+      initContainers:
+        - name: check-db-ready
+          image: postgres:14.10
+          command: ['sh', '-c', 
+            until pg_isready -h {{ include "queen.postgresql.fullname" . }} -p {{ .Values.postgresql.auth.port}}; 
+            do echo waiting for database; sleep 2; done;]
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
@@ -34,17 +40,15 @@ spec:
           imagePullPolicy: {{ .Values.api.image.pullPolicy }}
           {{- if .Values.postgresql.enabled }}
           env:
-            - name: FR_INSEE_QUEEN_PERSISTENCE_DATABASE_PASSWORD
+            - name: SPRING_DATASOURCE_PASSWORD
               valueFrom:
                 secretKeyRef:
                   name: {{ include "queen.postgresql.fullname" .}}
                   key: password
-            - name: FR_INSEE_QUEEN_PERSISTENCE_DATABASE_HOST
-              value:  {{ include "queen.postgresql.fullname" . }}
-            - name: FR_INSEE_QUEEN_PERSISTENCE_DATABASE_USER
+            - name: SPRING_DATASOURCE_URL
+              value:  {{ printf "jdbc:postgresql://%s:%.0f/%s" (include "queen.postgresql.fullname" .) .Values.postgresql.auth.port .Values.postgresql.auth.database | quote }}
+            - name: SPRING_DATASOURCE_USERNAME
               value: {{ .Values.postgresql.auth.username | quote}}
-            - name: FR_INSEE_QUEEN_PERSISTENCE_DATABASE_SCHEMA
-              value: {{ .Values.postgresql.auth.database | quote}}
           {{- end }}
           {{- if and .Values.api.enabled .Values.api.env }}
           envFrom: