diff --git a/helmfile/apps/univention-management-stack/values-stack-data-ums.yaml.gotmpl b/helmfile/apps/univention-management-stack/values-stack-data-ums.yaml.gotmpl
index 4062cc56..0c924d94 100644
--- a/helmfile/apps/univention-management-stack/values-stack-data-ums.yaml.gotmpl
+++ b/helmfile/apps/univention-management-stack/values-stack-data-ums.yaml.gotmpl
@@ -52,7 +52,7 @@ stackDataContext:
   umcPostgresqlHostname: {{ .Values.databases.umsSelfservice.host | quote }}
   umcPostgresqlUsername: {{ .Values.databases.umsSelfservice.username | quote }}
   umcMemcachedHostname: {{ .Values.cache.umsSelfservice.host | quote }}
-  umcMemcachedUsername: "selfservice"
+  umcMemcachedUsername: ""
 
 stackDataUms:
   loadDevData: true
diff --git a/helmfile/apps/univention-management-stack/values-umc-server.yaml.gotmpl b/helmfile/apps/univention-management-stack/values-umc-server.yaml.gotmpl
index 0aad3df7..08b8856b 100644
--- a/helmfile/apps/univention-management-stack/values-umc-server.yaml.gotmpl
+++ b/helmfile/apps/univention-management-stack/values-umc-server.yaml.gotmpl
@@ -39,23 +39,21 @@ extraVolumeMounts:
     mountPath: "/usr/share/univention-management-console/modules/udm-portals-announcement.xml"
     subPath: "udm-portals-announcement.xml"
 
+imagePullSecrets:
+  {{- range .Values.global.imagePullSecrets }}
+  - {{ . }}
+  {{- end }}
+
 image:
   registry: {{ .Values.global.imageRegistry | default .Values.images.umsUmcServer.registry | quote }}
   repository: {{ .Values.images.umsUmcServer.repository | quote }}
   pullPolicy: {{ .Values.global.imagePullPolicy | quote }}
   tag: {{ .Values.images.umsUmcServer.tag | quote }}
-  pullSecrets:
-    {{- range .Values.global.imagePullSecrets }}
-    - name: {{ . | quote }}
-    {{- end }}
 
 memcached:
   bundled: false
   auth:
-    username: null
-    # This is also used by the umc-server Helm chart to generate a secret. The secrets content is represented as an environment variable. If said variable is empty, the container fails to start due to an entrypoint script erroring on a nullish value for the environment variable SELF_SERVICE_MEMCACHED_SECRET.
-    password: "password"
-  server: {{ .Values.cache.umsSelfservice.host | quote }}
+    password: null
 
 postgresql:
   bundled: false
diff --git a/helmfile/environments/default/charts.yaml b/helmfile/environments/default/charts.yaml
index fc92fb37..944f0745 100644
--- a/helmfile/environments/default/charts.yaml
+++ b/helmfile/environments/default/charts.yaml
@@ -618,7 +618,7 @@ charts:
     registry: "registry.opencode.de"
     repository: "bmi/opendesk/components/supplier/univention/charts-mirror"
     name: "umc-gateway"
-    version: "0.11.2"
+    version: "0.11.6"
     verify: true
   umsUmcServer:
     # providerCategory: 'Supplier'
@@ -630,7 +630,7 @@ charts:
     registry: "registry.opencode.de"
     repository: "bmi/opendesk/components/supplier/univention/charts-mirror"
     name: "umc-server"
-    version: "0.11.2"
+    version: "0.11.6"
     verify: true
   xwiki:
     # providerCategory: 'Supplier'
diff --git a/helmfile/environments/default/images.yaml b/helmfile/environments/default/images.yaml
index bd1a3569..e040fcc4 100644
--- a/helmfile/environments/default/images.yaml
+++ b/helmfile/environments/default/images.yaml
@@ -714,7 +714,7 @@ images:
     # upstreamMirrorStartFrom: ['0', '7', '3']
     registry: "registry.opencode.de"
     repository: "bmi/opendesk/components/supplier/univention/images-mirror/umc-gateway"
-    tag: "0.11.2@sha256:13edaa88ded4b3389ef36d0215ad19ea093ae962f8de9b4b178550e02de06277"
+    tag: "0.11.6@sha256:5d7c1a9b74409d2d7c42e08ca87b41cda506e43cad49efbc85a4ed6b8e9c6bc8"
   umsUmcServer:
     # providerCategory: 'Supplier'
     # providerResponsible: 'Univention'
@@ -724,7 +724,7 @@ images:
     # upstreamMirrorStartFrom: ['0', '7', '3']
     registry: "registry.opencode.de"
     repository: "bmi/opendesk/components/supplier/univention/images-mirror/umc-server"
-    tag: "0.11.2@sha256:866b8c3d2845653c68316458d7a24901b0493d2e2b83d50e0932adc42cda1706"
+    tag: "0.11.6@sha256:f598a39206cf1acc901876e5d54b6c6e47980e979b5e29677f7738c3acaf75d3"
   umsWaitForDependency:
     # providerCategory: 'Supplier'
     # providerResponsible: 'Univention'