diff --git a/argocd/apps/openproject/openproject.yaml b/argocd/apps/openproject/openproject.yaml
index a2cc02e..a3eedf3 100644
--- a/argocd/apps/openproject/openproject.yaml
+++ b/argocd/apps/openproject/openproject.yaml
@@ -34,6 +34,14 @@ spec:
           value: lets-encrypt-staging
         - name: 'postgresql.bundled'
           value: 'true'
+        - name: 'postgresql.auth.username'
+          value: 'openproject'
+        - name: 'postgresql.auth.database'
+          value: 'openproject'
+        - name: 'postgresql.auth.password'
+          value: 'openproject'
+        - name: 'postgresql.auth.postgresPassword'
+          value: 'openproject'
         - name: 'persistence.enabled'
           value: 'false'
         - name: 's3.enabled'