diff --git a/charts/voucher/Chart.lock b/charts/voucher/Chart.lock
index bb2d108fe..e77625f86 100644
--- a/charts/voucher/Chart.lock
+++ b/charts/voucher/Chart.lock
@@ -1,6 +1,6 @@
 dependencies:
 - name: postgresql
   repository: https://charts.bitnami.com/bitnami
-  version: 18.5.2
-digest: sha256:0059f5f5f14d99cc4ebf9fc1c203139bad23c6ab9b541d136181e94603787d19
-generated: "2026-03-04T11:29:10.572497847Z"
+  version: 18.6.2
+digest: sha256:a6d6ee7f9caf1a1901200bdeb352581b6b2dd868872acd0464f5f3158352438a
+generated: "2026-04-24T18:41:08.037684941Z"
diff --git a/charts/voucher/Chart.yaml b/charts/voucher/Chart.yaml
index 30e33c795..aabbaa0e6 100644
--- a/charts/voucher/Chart.yaml
+++ b/charts/voucher/Chart.yaml
@@ -20,6 +20,6 @@ version: 0.1.0-dev
 appVersion: 0.1.0
 dependencies:
   - name: postgresql
-    version: 18.5.2
+    version: 18.6.2
     repository: https://charts.bitnami.com/bitnami
     condition: postgresql.enabled