diff --git a/Chart.lock b/Chart.lock
index 6b2ab8c..8de130e 100644
--- a/Chart.lock
+++ b/Chart.lock
@@ -1,7 +1,7 @@
 dependencies:
 - name: postgresql
   repository: oci://registry-1.docker.io/bitnamicharts
-  version: 16.7.27
+  version: 18.5.5
 - name: postgresql-ha
   repository: oci://registry-1.docker.io/bitnamicharts
   version: 16.3.2
@@ -11,5 +11,5 @@ dependencies:
 - name: valkey
   repository: oci://registry-1.docker.io/bitnamicharts
   version: 3.0.31
-digest: sha256:ceb6a1890cfdc2627abb85d3e2a4baa64d30afd21dcfabce978a824a67f0a2bb
-generated: "2025-08-30T00:03:04.59764502Z"
+digest: sha256:ba77f26dfc6cb97f9e3a2d5ed27a7c0d5145db1a05f74d1248acd5f2666bedf2
+generated: "2026-03-07T11:09:28.12183385Z"
diff --git a/Chart.yaml b/Chart.yaml
index 3891e3d..72bc84e 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -43,7 +43,7 @@ dependencies:
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql
   - name: postgresql
     repository: oci://registry-1.docker.io/bitnamicharts
-    version: 16.7.27
+    version: 18.5.5
     condition: postgresql.enabled
   # https://github.com/bitnami/charts/blob/main/bitnami/postgresql-ha/Chart.yaml
   - name: postgresql-ha