1 files changed, 4 insertions, 0 deletions
diff --git a/docs/usage/configuration/config_documentation.md b/docs/usage/configuration/config_documentation.md
index 2883f76a26..75483bfb12 100644
--- a/docs/usage/configuration/config_documentation.md
+++ b/docs/usage/configuration/config_documentation.md
@@ -3927,6 +3927,9 @@ This setting has the following sub-options:
 * `host` and `port`: Optional host and port to use to connect to redis. Defaults to
    localhost and 6379
 * `password`: Optional password if configured on the Redis instance.
+* `dbid`: Optional redis dbid if needs to connect to specific redis logical db.
+
+  _Added in Synapse 1.78.0._
 
 Example configuration:
 ```yaml
@@ -3935,6 +3938,7 @@ redis:
   host: localhost
   port: 6379
   password: <secret_password>
+  dbid: <dbid>
 ```
 ---
 ## Individual worker configuration