diff --git a/deploy/kubernetes/dolphinscheduler/Chart.yaml b/deploy/kubernetes/dolphinscheduler/Chart.yaml
index 51c036a1497e2b4910985d18f4c20846df3cc97e..6ad2f989de6eee3b6f19ba69b5b3949dd2219488 100644
--- a/deploy/kubernetes/dolphinscheduler/Chart.yaml
+++ b/deploy/kubernetes/dolphinscheduler/Chart.yaml
@@ -43,10 +43,16 @@ appVersion: dev-SNAPSHOT
 
 dependencies:
 - name: postgresql
-  version: 11.6.6
-  repository: https://charts.bitnami.com/bitnami
+  version: 10.3.18
+  # Due to a change in the Bitnami repo, https://charts.bitnami.com/bitnami was truncated only
+  # containing entries for the latest 6 months (from January 2022 on).
+  # This URL: https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami
+  # contains the full 'index.yaml'.
+  # See detail here: https://github.com/bitnami/charts/issues/10833
+  repository: https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami
   condition: postgresql.enabled
 - name: zookeeper
-  version: 9.2.5
-  repository: https://charts.bitnami.com/bitnami
+  version: 6.5.3
+  # Same as above.
+  repository: https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami
   condition: zookeeper.enabled
diff --git a/deploy/kubernetes/dolphinscheduler/templates/_helpers.tpl b/deploy/kubernetes/dolphinscheduler/templates/_helpers.tpl
index 3d06502ad169e0679cf0e4558105cead44e9fa38..8507f4669c9fecdd72dc25fc215ad023b33a0839 100644
--- a/deploy/kubernetes/dolphinscheduler/templates/_helpers.tpl
+++ b/deploy/kubernetes/dolphinscheduler/templates/_helpers.tpl
@@ -143,7 +143,7 @@ Create a database environment variables.
     secretKeyRef:
       {{- if .Values.postgresql.enabled }}
       name: {{ template "dolphinscheduler.postgresql.fullname" . }}
-      key: postgres-password
+      key: postgresql-password
       {{- else }}
       name: {{ include "dolphinscheduler.fullname" . }}-externaldb
       key: database-password