diff --git a/pretix-helm/Chart.lock b/pretix-helm/Chart.lock
index c971546..de9defd 100644
--- a/pretix-helm/Chart.lock
+++ b/pretix-helm/Chart.lock
@@ -1,9 +1,9 @@
 dependencies:
 - name: postgresql
   repository: https://charts.bitnami.com/bitnami
-  version: 16.7.27
+  version: 18.3.0
 - name: redis
   repository: https://charts.bitnami.com/bitnami
   version: 19.6.4
-digest: sha256:2d3aaa21f018ea007f098d99541123a8ddf0419c3ea5eb82cdaa735bc2b87b62
-generated: "2025-09-20T14:16:30.047125434Z"
+digest: sha256:ef7092608f37bcb4c3df98cac8b63b5708e9d52e095c1e41c3a97be58c8d485b
+generated: "2026-02-12T14:49:22.65707374Z"
diff --git a/pretix-helm/Chart.yaml b/pretix-helm/Chart.yaml
index 777fbbb..9021549 100644
--- a/pretix-helm/Chart.yaml
+++ b/pretix-helm/Chart.yaml
@@ -8,7 +8,7 @@ keywords:
   - event-tickets
 dependencies:
   - name: postgresql
-    version: "16.7.27"
+    version: "18.3.0"
     repository: "https://charts.bitnami.com/bitnami"
     condition: postgresql.enabled
   - name: redis