diff --git a/apps/emqx/rebar.config b/apps/emqx/rebar.config
index 011204b95..9834563a7 100644
--- a/apps/emqx/rebar.config
+++ b/apps/emqx/rebar.config
@@ -43,7 +43,7 @@
             {meck, "0.9.2"},
             {proper, "1.4.0"},
             {bbmustache, "1.10.0"},
-            {emqtt, {git, "https://github.com/emqx/emqtt", {tag, "1.5.0"}}}
+            {emqtt, {git, "https://github.com/qzhuyan/emqtt", {branch, "dev/william/bump-quicer"}}}
         ]},
         {extra_src_dirs, [{"test", [recursive]}]}
     ]}
diff --git a/apps/emqx/rebar.config.script b/apps/emqx/rebar.config.script
index afcaff941..888e911f3 100644
--- a/apps/emqx/rebar.config.script
+++ b/apps/emqx/rebar.config.script
@@ -1,16 +1,16 @@
 %% -*- mode: erlang -*-
 IsCentos6 = fun() ->
-                case file:read_file("/etc/centos-release") of
-                    {ok, <<"CentOS release 6", _/binary >>} ->
-                        true;
-                    _ ->
-                        false
-                end
-            end,
+    case file:read_file("/etc/centos-release") of
+        {ok, <<"CentOS release 6", _/binary>>} ->
+            true;
+        _ ->
+            false
+    end
+end,
 
 IsWin32 = fun() ->
-                win32 =:= element(1, os:type())
-          end,
+    win32 =:= element(1, os:type())
+end,
 
 IsMacOS = fun() ->
                {unix, darwin} =:= os:type()
@@ -25,13 +25,14 @@ IsQuicSupp = fun() ->
              end,
 
 Bcrypt = {bcrypt, {git, "https://github.com/emqx/erlang-bcrypt.git", {tag, "0.6.0"}}},
-Quicer = {quicer, {git, "https://github.com/emqx/quic.git", {tag, "0.0.9"}}},
+Quicer = {quicer, {git, "https://github.com/emqx/quic.git", {tag, "0.0.11"}}}.
 
 ExtraDeps = fun(C) ->
-                {deps, Deps0} = lists:keyfind(deps, 1, C),
-                Deps = Deps0 ++ [Bcrypt || not IsWin32()] ++
-                [ Quicer || IsQuicSupp()],
-                lists:keystore(deps, 1, C, {deps, Deps})
-            end,
+    {deps, Deps0} = lists:keyfind(deps, 1, C),
+    Deps =
+        Deps0 ++ [Bcrypt || not IsWin32()] ++
+            [Quicer || IsQuicSupp()],
+    lists:keystore(deps, 1, C, {deps, Deps})
+end,
 
 ExtraDeps(CONFIG).
diff --git a/apps/emqx/src/emqx_listeners.erl b/apps/emqx/src/emqx_listeners.erl
index 087555b1c..9d46fe975 100644
--- a/apps/emqx/src/emqx_listeners.erl
+++ b/apps/emqx/src/emqx_listeners.erl
@@ -324,15 +324,18 @@ do_start_listener(quic, ListenerName, #{bind := ListenOn} = Opts) ->
     case [A || {quicer, _, _} = A <- application:which_applications()] of
         [_] ->
             DefAcceptors = erlang:system_info(schedulers_online) * 8,
+            IdleTimeout = timer:seconds(maps:get(idle_timeout, Opts)),
             ListenOpts = [
                 {cert, maps:get(certfile, Opts)},
                 {key, maps:get(keyfile, Opts)},
                 {alpn, ["mqtt"]},
                 {conn_acceptors, lists:max([DefAcceptors, maps:get(acceptors, Opts, 0)])},
+                {keep_alive_interval_ms, ceil(IdleTimeout / 3)},
+                {server_resumption_level, 2},
                 {idle_timeout_ms,
                     lists:max([
                         emqx_config:get_zone_conf(zone(Opts), [mqtt, idle_timeout]) * 3,
-                        timer:seconds(maps:get(idle_timeout, Opts))
+                        IdleTimeout
                     ])}
             ],
             ConnectionOpts = #{
diff --git a/apps/emqx/src/emqx_quic_connection.erl b/apps/emqx/src/emqx_quic_connection.erl
index f5c281242..b44a4f1c2 100644
--- a/apps/emqx/src/emqx_quic_connection.erl
+++ b/apps/emqx/src/emqx_quic_connection.erl
@@ -15,6 +15,7 @@
 %%--------------------------------------------------------------------
 
 -module(emqx_quic_connection).
+-include_lib("quicer/include/quicer.hrl").
 
 %% Callbacks
 -export([
@@ -59,5 +60,5 @@ connected(_Conn, S) ->
 
 -spec shutdown(quicer:connection_handler(), cb_state()) -> {ok, cb_state()} | {error, any()}.
 shutdown(Conn, S) ->
-    quicer:async_close_connection(Conn),
+    quicer:async_shutdown_connection(Conn, ?QUIC_CONNECTION_SHUTDOWN_FLAG_NONE, 0),
     {ok, S}.
diff --git a/apps/emqx/src/emqx_quic_stream.erl b/apps/emqx/src/emqx_quic_stream.erl
index e98ea0137..bed5805e2 100644
--- a/apps/emqx/src/emqx_quic_stream.erl
+++ b/apps/emqx/src/emqx_quic_stream.erl
@@ -16,6 +16,7 @@
 
 %% MQTT/QUIC Stream
 -module(emqx_quic_stream).
+-include_lib("quicer/include/quicer.hrl").
 
 %% emqx transport Callbacks
 -export([
@@ -38,7 +39,7 @@ wait({ConnOwner, Conn}) ->
     receive
         %% from msquic
         {quic, new_stream, Stream} ->
-            {ok, Stream};
+            {ok, {quic, Conn, Stream}};
         {'EXIT', ConnOwner, _Reason} ->
             {error, enotconn}
     end.
@@ -46,18 +47,18 @@ wait({ConnOwner, Conn}) ->
 type(_) ->
     quic.
 
-peername(S) ->
-    quicer:peername(S).
+peername({quic, Conn, _Stream}) ->
+    quicer:peername(Conn).
 
-sockname(S) ->
-    quicer:sockname(S).
+sockname({quic, Conn, _Stream}) ->
+    quicer:sockname(Conn).
 
 peercert(_S) ->
     %% @todo but unsupported by msquic
     nossl.
 
-getstat(Socket, Stats) ->
-    case quicer:getstat(Socket, Stats) of
+getstat({quic, Conn, _Stream}, Stats) ->
+    case quicer:getstat(Conn, Stats) of
         {error, _} -> {error, closed};
         Res -> Res
     end.
@@ -84,9 +85,9 @@ getopts(_Socket, _Opts) ->
         {buffer, 80000}
     ]}.
 
-fast_close(Stream) ->
-    %% Stream might be closed already.
-    _ = quicer:async_close_stream(Stream),
+fast_close({quic, _Conn, Stream}) ->
+    %% Flush send buffer, gracefully shutdown
+    quicer:async_shutdown_stream(Stream),
     ok.
 
 -spec ensure_ok_or_exit(atom(), list(term())) -> term().
@@ -102,9 +103,7 @@ ensure_ok_or_exit(Fun, Args = [Sock | _]) when is_atom(Fun), is_list(Args) ->
             Result
     end.
 
-async_send(Stream, Data, Options) when is_list(Data) ->
-    async_send(Stream, iolist_to_binary(Data), Options);
-async_send(Stream, Data, _Options) when is_binary(Data) ->
+async_send({quic, _Conn, Stream}, Data, _Options) ->
     case quicer:send(Stream, Data) of
         {ok, _Len} -> ok;
         Other -> Other
diff --git a/apps/emqx/test/emqx_mqtt_protocol_v5_SUITE.erl b/apps/emqx/test/emqx_mqtt_protocol_v5_SUITE.erl
index 5ef43e738..88ccda452 100644
--- a/apps/emqx/test/emqx_mqtt_protocol_v5_SUITE.erl
+++ b/apps/emqx/test/emqx_mqtt_protocol_v5_SUITE.erl
@@ -252,7 +252,8 @@ t_connect_will_message(Config) ->
     {ok, _, [2]} = emqtt:subscribe(Client4, Topic, qos2),
     ok = emqtt:disconnect(Client3),
     %% [MQTT-3.1.2-10]
-    ?assertEqual(0, length(receive_messages(1))),
+    MsgRecv = receive_messages(1),
+    ?assertEqual([], MsgRecv),
     ok = emqtt:disconnect(Client4).
 
 t_batch_subscribe(init, Config) ->
diff --git a/mix.exs b/mix.exs
index 0c3a4ff37..8125ee9f1 100644
--- a/mix.exs
+++ b/mix.exs
@@ -600,7 +600,7 @@ defmodule EMQXUmbrella.MixProject do
   defp quicer_dep() do
     if enable_quicer?(),
       # in conflict with emqx and emqtt
-      do: [{:quicer, github: "emqx/quic", tag: "0.0.9", override: true}],
+      do: [{:quicer, github: "emqx/quic", tag: "0.0.11", override: true}],
       else: []
   end
 
diff --git a/rebar.config b/rebar.config
index 744feb8de..56c427678 100644
--- a/rebar.config
+++ b/rebar.config
@@ -60,7 +60,7 @@
     , {ecpool, {git, "https://github.com/emqx/ecpool", {tag, "0.5.2"}}}
     , {replayq, "0.3.4"}
     , {pbkdf2, {git, "https://github.com/emqx/erlang-pbkdf2.git", {tag, "2.0.4"}}}
-    , {emqtt, {git, "https://github.com/emqx/emqtt", {tag, "1.5.1"}}}
+    , {emqtt, {git, "https://github.com/qzhuyan/emqtt", {branch, "dev/william/bump-quicer"}}}
     , {rulesql, {git, "https://github.com/emqx/rulesql", {tag, "0.1.4"}}}
     , {observer_cli, "1.7.1"} % NOTE: depends on recon 2.5.x
     , {system_monitor, {git, "https://github.com/ieQu1/system_monitor", {tag, "3.0.3"}}}
diff --git a/rebar.config.erl b/rebar.config.erl
index 0700a0bad..1d04d773f 100644
--- a/rebar.config.erl
+++ b/rebar.config.erl
@@ -38,7 +38,7 @@ bcrypt() ->
     {bcrypt, {git, "https://github.com/emqx/erlang-bcrypt.git", {tag, "0.6.0"}}}.
 
 quicer() ->
-    {quicer, {git, "https://github.com/emqx/quic.git", {tag, "0.0.9"}}}.
+    {quicer, {git, "https://github.com/emqx/quic.git", {tag, "0.0.11"}}}.
 
 jq() ->
     {jq, {git, "https://github.com/emqx/jq", {tag, "v0.3.4"}}}.