diff --git a/README.md b/README.md
index 4a34666..d52ae24 100644
--- a/README.md
+++ b/README.md
@@ -151,7 +151,8 @@ A proper list contains:
 
 * `endpoints`: List of the GreptimeDB server address in the form of `{http, host, port}`
 * `pool`, `pool_size` etc.: the client pool settings
-* `grpc_options`: grpxbox [client options](https://github.com/tsloughter/grpcbox#defining-channels)
+* `grpc_opts`: grpxbox [client options](https://github.com/tsloughter/grpcbox#defining-channels)
+* `ssl_opts`: when the endpoint scheme is `https`, the ssl options to use(`[]` by default).
 * `auth`:  authentication options,  `{auth, {basic, #{username => <<"greptime_user">>, password => <<"greptime_pwd">>}}}` for example.
 * `timeunit`: Timestamp unit, supports:
     * `ns` or `nanosecond`
diff --git a/src/greptimedb_worker.erl b/src/greptimedb_worker.erl
index 2390dac..4a8bac6 100644
--- a/src/greptimedb_worker.erl
+++ b/src/greptimedb_worker.erl
@@ -51,7 +51,7 @@ init(Args) ->
     logger:debug("[GreptimeDB] genserver has started (~w)~n", [self()]),
     Endpoints = proplists:get_value(endpoints, Args),
     SslOptions = proplists:get_value(ssl_opts, Args, []),
-    Options = proplists:get_value(grpc_options, Args, #{connect_timeout => ?CONNECT_TIMEOUT}),
+    Options = proplists:get_value(grpc_opts, Args, #{connect_timeout => ?CONNECT_TIMEOUT}),
     Channels =
         lists:map(fun({Scheme, Host, Port}) -> {Scheme, Host, Port, ssl_options(Scheme, SslOptions)}
                   end, Endpoints),