diff --git a/charts/mailu/Chart.lock b/charts/mailu/Chart.lock
index 007e1085..eb4444ec 100644
--- a/charts/mailu/Chart.lock
+++ b/charts/mailu/Chart.lock
@@ -7,6 +7,6 @@ dependencies:
   version: 16.7.27
 - name: mariadb
   repository: https://charts.bitnami.com/bitnami
-  version: 22.0.0
-digest: sha256:281a64cc591c02586a4ef68228f19de0968514b3946477e7fc5db32f3eca0672
-generated: "2025-11-16T20:41:17.136901+01:00"
+  version: 25.1.2
+digest: sha256:a9848ecd4c9e6a6a383b721454f06e6d5142db39a53f9a04e769f3a695e343d6
+generated: "2026-05-13T10:33:33.05502969Z"
diff --git a/charts/mailu/Chart.yaml b/charts/mailu/Chart.yaml
index a91b0e39..db00c3f0 100644
--- a/charts/mailu/Chart.yaml
+++ b/charts/mailu/Chart.yaml
@@ -33,5 +33,5 @@ dependencies:
     repository: https://charts.bitnami.com/bitnami
   - condition: mariadb.enabled
     name: mariadb
-    version: 22.0.0
+    version: 25.1.2
     repository: https://charts.bitnami.com/bitnami