diff --git a/deploy/helm/bernstein/Chart.yaml b/deploy/helm/bernstein/Chart.yaml
index 40bfe1699..d31f1c1b8 100644
--- a/deploy/helm/bernstein/Chart.yaml
+++ b/deploy/helm/bernstein/Chart.yaml
@@ -17,7 +17,7 @@ maintainers:
 
 dependencies:
   - name: postgresql
-    version: "15.x.x"
+    version: "18.x"
     repository: https://charts.bitnami.com/bitnami
     condition: postgresql.enabled