diff --git a/java/Chart.yaml b/java/Chart.yaml
index 7a13318..caa8497 100644
--- a/java/Chart.yaml
+++ b/java/Chart.yaml
@@ -19,6 +19,6 @@ dependencies:
     version: 2.2.2
     repository: oci://hmctsprod.azurecr.io/helm
   - name: postgresql
-    version: 15.2.4
+    version: 18.2.0
     repository: https://charts.bitnami.com/bitnami
     condition: postgresql.enabled