diff --git a/src/client/grpc_client_sup.erl b/src/client/grpc_client_sup.erl
index bdff02a..1f3077f 100644
--- a/src/client/grpc_client_sup.erl
+++ b/src/client/grpc_client_sup.erl
@@ -20,6 +20,7 @@
 -behaviour(supervisor).
 
 -export([ create_channel_pool/3
+        , spec/3
         , stop_channel_pool/1
         ]).
 
@@ -29,6 +30,8 @@
 
 -define(APP_SUP, grpc_sup).
 
+-type name() :: term().
+
 -type options() :: grpc_client:client_opts()
                  | #{pool_size => non_neg_integer()}.
 
@@ -36,9 +39,17 @@
 %% APIs
 %%--------------------------------------------------------------------
 
--spec create_channel_pool(term(), uri_string:uri_string(), options())
+-spec create_channel_pool(name(), uri_string:uri_string(), options())
     -> supervisor:startchild_ret().
 create_channel_pool(Name, URL, Opts) ->
+    case spec(Name, URL, Opts) of
+        {ok, Spec} -> supervisor:start_child(?APP_SUP, Spec);
+        {error, Reason} -> {error, Reason}
+    end.
+
+-spec spec(name(), uri_string:uri_string(), options())
+    -> {ok, supervisor:child_spec()} | {error, term()}.
+spec(Name, URL, Opts) ->
     case uri_string:parse(URL) of
         #{scheme := Scheme, host := Host, port := Port} ->
             Server = {Scheme, Host, Port},
@@ -48,11 +59,11 @@ create_channel_pool(Name, URL, Opts) ->
                      shutdown => infinity,
                      type     => supervisor,
                      modules  => [?MODULE]},
-            supervisor:start_child(?APP_SUP, Spec);
+            {ok, Spec};
         {error, Reason, _} -> {error, Reason}
     end.
 
--spec stop_channel_pool(term()) -> ok | {error, term()}.
+-spec stop_channel_pool(name()) -> ok | {error, term()}.
 stop_channel_pool(Name) ->
     case supervisor:terminate_child(?APP_SUP, Name) of
         ok ->
diff --git a/src/grpc.appup.src b/src/grpc.appup.src
index ae1947d..4bd2b29 100644
--- a/src/grpc.appup.src
+++ b/src/grpc.appup.src
@@ -1,6 +1,12 @@
 %% -*- mode: erlang -*-
-{"0.6.13",
- [{"0.6.12", [{load_module, grpc_client, brutal_purge, soft_purge, []}]},
+{"0.6.14",
+ [
+  {"0.6.13",
+   [{load_module, grpc_client, brutal_purge, soft_purge, []},
+    {load_module, grpc_client_sup, brutal_purge, soft_purge, []}]},
+  {"0.6.12",
+   [{load_module, grpc_client, brutal_purge, soft_purge, []},
+    {load_module, grpc_client_sup, brutal_purge, soft_purge, []}]},
   {"0.6.11",
    [{load_module, grpc_client, brutal_purge, soft_purge, []},
     {load_module, grpc_client_sup, brutal_purge, soft_purge, []},
@@ -44,7 +50,13 @@
     {load_module, grpc_client_sup, brutal_purge, soft_purge, []},
     {load_module, grpc, brutal_purge, soft_purge, []}]},
   {<<".*">>, []}],
- [{"0.6.12", [{load_module, grpc_client, brutal_purge, soft_purge, []}]},
+ [
+  {"0.6.13",
+   [{load_module, grpc_client, brutal_purge, soft_purge, []},
+    {load_module, grpc_client_sup, brutal_purge, soft_purge, []}]},
+  {"0.6.12",
+   [{load_module, grpc_client, brutal_purge, soft_purge, []},
+    {load_module, grpc_client_sup, brutal_purge, soft_purge, []}]},
   {"0.6.11",
    [{load_module, grpc_client, brutal_purge, soft_purge, []},
     {load_module, grpc_client_sup, brutal_purge, soft_purge, []},