diff --git a/argocd/apps/wekan/test-wekan.yaml b/argocd/apps/wekan/test-wekan.yaml
index dc1278d..d3fb73d 100644
--- a/argocd/apps/wekan/test-wekan.yaml
+++ b/argocd/apps/wekan/test-wekan.yaml
@@ -38,6 +38,8 @@ spec:
           value: "1"
         - name: root_url
           value: https://test-wekan.innovation-hub-niedersachsen.de
+        - name: "MONGO_URL"
+          value: "mongodb://test-wekan-mongodb:27017"
     chart: wekan
   destination:
     server: 'https://kubernetes.default.svc'