diff --git a/charts/templates/deployment-data-manager.yaml b/charts/templates/deployment-data-manager.yaml
index 29b1cb0..9803e70 100644
--- a/charts/templates/deployment-data-manager.yaml
+++ b/charts/templates/deployment-data-manager.yaml
@@ -37,6 +37,9 @@ spec:
             - name: data-manager
               containerPort: {{ .Values.dataManager.service.targetPort }}
               protocol: TCP
+            - name: data-manager-protobuf
+              containerPort: {{ .Values.dataManager.service.protobufTargetPort }}
+              protocol: TCP
           volumeMounts:
             {{- if .Values.persistence.enabled }}
             - name: {{ include "htwkalender.name" . }}-storage
diff --git a/charts/templates/service-data-manager.yaml b/charts/templates/service-data-manager.yaml
index 331f2b0..e95556e 100644
--- a/charts/templates/service-data-manager.yaml
+++ b/charts/templates/service-data-manager.yaml
@@ -15,3 +15,7 @@ spec:
       targetPort: {{ .Values.dataManager.service.targetPort }}
       protocol: TCP
       name: data-manager
+    - port: {{ .Values.dataManager.service.protobufPort }}
+      targetPort: {{ .Values.dataManager.service.protobufTargetPort }}
+      protocol: TCP
+      name: data-manager-protobuf
\ No newline at end of file
diff --git a/charts/values.yaml b/charts/values.yaml
index e9d4e43..54ee4d4 100644
--- a/charts/values.yaml
+++ b/charts/values.yaml
@@ -10,6 +10,8 @@ dataManager:
     name: &service_data_manager htwkalender-data-manager
     port: &service_data_manager_port 8090
     targetPort: 8090
+    protobufPort: &service_data_manager_protobuf_port 50051
+    protobufTargetPort: 50051
 ical:
   name: ical
   replicas: 2