diff --git a/docs/pages/deploy-a-cluster/high-availability.mdx b/docs/pages/deploy-a-cluster/high-availability.mdx
index c2f4df819b895..8ce6cff8b9a74 100644
--- a/docs/pages/deploy-a-cluster/high-availability.mdx
+++ b/docs/pages/deploy-a-cluster/high-availability.mdx
@@ -124,6 +124,7 @@ services:
 | `3026` | HTTPS Kubernetes proxy |
 | `3036` | MySQL port |
 | `5432` | Postgres port |
+| `27017` | Mongo port |
 
 </TabItem>
 </Tabs>