diff --git a/charts/rhdh/Chart.lock b/charts/rhdh/Chart.lock
index b76006b0..63309b00 100644
--- a/charts/rhdh/Chart.lock
+++ b/charts/rhdh/Chart.lock
@@ -4,6 +4,6 @@ dependencies:
   version: 2.41.0
 - name: postgresql
   repository: oci://registry-1.docker.io/bitnamicharts
-  version: 16.2.5
-digest: sha256:e6ed61379ddd9613a443a09f9b3c66d6c648a7951348ef396eb4cc4b4bda302a
-generated: "2026-09-14T15:03:02.048226874Z"
+  version: 18.12.4
+digest: sha256:f416277bc02f21f648611f2fa3364aa907ac3da16d0c7c0b518ead789bf74863
+generated: "2026-10-05T15:08:42.898163423Z"
diff --git a/charts/rhdh/Chart.yaml b/charts/rhdh/Chart.yaml
index 52a62af1..7ef0475b 100644
--- a/charts/rhdh/Chart.yaml
+++ b/charts/rhdh/Chart.yaml
@@ -36,7 +36,7 @@ dependencies:
   # that check. See https://github.com/bitnami/charts/issues/30850
   - name: postgresql
     repository: oci://registry-1.docker.io/bitnamicharts
-    version: "16.2.5"
+    version: "18.12.4"
     condition: postgresql.enabled
 keywords:
   - backstage