diff --git a/docs/uplinks.md b/docs/uplinks.md
index fa612e221..da1268df6 100644
--- a/docs/uplinks.md
+++ b/docs/uplinks.md
@@ -26,6 +26,7 @@ You can define mutiple uplinks and each of them must have an unique name (key).
 Property | Type | Required | Example | Support | Description | Default
 --- | --- | --- | --- | --- | --- | ---
 url | string | Yes | https://registry.npmjs.org/ | all | The registry url | npmjs
+ca | string | No | ~./ssl/client.crt' | all | SSL path certificate |
 timeout | string | No | 100ms | all | set new timeout for the request | 30s
 maxage | string | No |10m | all | limit maximun failure request | 2m
 fail_timeout | string | No |10m | all | defines max time when a request becomes a failure | 5m