diff --git a/charts/nominatim/Chart.yaml b/charts/nominatim/Chart.yaml
index 29f66d0..e1714f6 100644
--- a/charts/nominatim/Chart.yaml
+++ b/charts/nominatim/Chart.yaml
@@ -15,7 +15,7 @@ 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: 4.2.3
+version: 4.3.0
 
 # 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
diff --git a/charts/nominatim/README.md b/charts/nominatim/README.md
index aff294c..cd7dd57 100644
--- a/charts/nominatim/README.md
+++ b/charts/nominatim/README.md
@@ -535,7 +535,7 @@ kind: Secret
 metadata:
   name: my-secret
 data:
-  POSTGRESQL_DSN: pgsql:host=release-name-postgresql;port=5432;user=postgres;password=nominatim;dbname=nominatim
+  POSTGRESQL_DSN: postgresql://user:password@host:port/database
 ```
 
 ### Ingress
diff --git a/charts/nominatim/templates/_helpers.tpl b/charts/nominatim/templates/_helpers.tpl
index 93a8edd..59b84ca 100644
--- a/charts/nominatim/templates/_helpers.tpl
+++ b/charts/nominatim/templates/_helpers.tpl
@@ -87,7 +87,7 @@ Add environment variables to configure database values
 Create the database URL.
 */}}
 {{- define "nominatim.databaseUrl" -}}
-pgsql:host={{ include "nominatim.databaseHost" . }};port={{ include "nominatim.databasePort" . }};user={{ include "nominatim.databaseUser" . }};password={{ include "nominatim.databasePassword" . }};dbname={{ include "nominatim.databaseName" . }}
+postgresql://{{ include "nominatim.databaseUser" . }}:{{ include "nominatim.databasePassword" . }}@{{ include "nominatim.databaseHost" . }}:{{ include "nominatim.databasePort" . }}/{{ include "nominatim.databaseName" . }}
 {{- end }}
 
 {{- define "nominatim.containerPort" -}}
diff --git a/charts/nominatim/templates/deployment.yaml b/charts/nominatim/templates/deployment.yaml
index 32f7aba..2b1df1c 100644
--- a/charts/nominatim/templates/deployment.yaml
+++ b/charts/nominatim/templates/deployment.yaml
@@ -161,8 +161,7 @@ spec:
                 secretKeyRef:
                   name: {{ .Values.externalDatabase.existingSecretDsn }}
                   key: {{ .Values.externalDatabase.existingSecretDsnKey }}
-              {{- end }}
-              {{- if not .Values.externalDatabase.existingSecretDsn }}
+              {{- else }}
               value: {{ include "nominatim.databaseUrl" . }}
               {{- end }}
             {{- if .Values.extraEnvVars }}
diff --git a/charts/nominatim/templates/initJob.yaml b/charts/nominatim/templates/initJob.yaml
index 7ce6ebc..3a4b291 100644
--- a/charts/nominatim/templates/initJob.yaml
+++ b/charts/nominatim/templates/initJob.yaml
@@ -27,12 +27,26 @@ spec:
       {{- end }}
       initContainers:
         - name: wait-for-db
-          image: chainguard/wait-for-it:latest
+          image: postgres
+          env:
+            - name: NOMINATIM_DATABASE_DSN
+              {{- if .Values.externalDatabase.existingSecretDsn }}
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.externalDatabase.existingSecretDsn }}
+                  key: {{ .Values.externalDatabase.existingSecretDsnKey }}
+              {{- else }}
+              value: {{ include "nominatim.databaseUrl" . }}
+              {{- end }}
           args:
-            - -h
-            - {{ include "nominatim.databaseHost" . | quote}}
-            - -p
-            - {{ include "nominatim.databasePort" . | quote }}
+            - /bin/bash
+            - -c
+            - |
+              echo $NOMINATIM_DATABASE_DSN;
+              until pg_isready -d $NOMINATIM_DATABASE_DSN; do
+                echo "Waiting for database..."
+                sleep 2
+              done
 
         - name: download
           image: curlimages/curl
@@ -113,8 +127,7 @@ spec:
                 secretKeyRef:
                   name: {{ .Values.externalDatabase.existingSecretDsn }}
                   key: {{ .Values.externalDatabase.existingSecretDsnKey }}
-              {{- end }}
-              {{- if not .Values.externalDatabase.existingSecretDsn }}
+              {{- else }}
               value: {{ include "nominatim.databaseUrl" . }}
               {{- end }}
             {{- if .Values.flatnode.enabled }}