diff --git a/apps/emqx/rebar.config b/apps/emqx/rebar.config
index bcc007141..b5cf22798 100644
--- a/apps/emqx/rebar.config
+++ b/apps/emqx/rebar.config
@@ -30,7 +30,7 @@
     {esockd, {git, "https://github.com/emqx/esockd", {tag, "5.9.9"}}},
     {ekka, {git, "https://github.com/emqx/ekka", {tag, "0.17.0"}}},
     {gen_rpc, {git, "https://github.com/emqx/gen_rpc", {tag, "3.3.0"}}},
-    {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.40.1"}}},
+    {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.40.2"}}},
     {emqx_http_lib, {git, "https://github.com/emqx/emqx_http_lib.git", {tag, "0.5.3"}}},
     {pbkdf2, {git, "https://github.com/emqx/erlang-pbkdf2.git", {tag, "2.0.4"}}},
     {recon, {git, "https://github.com/ferd/recon", {tag, "2.5.1"}}},
diff --git a/apps/emqx_license/test/emqx_license_http_api_SUITE.erl b/apps/emqx_license/test/emqx_license_http_api_SUITE.erl
index ad16d75c9..799e4f591 100644
--- a/apps/emqx_license/test/emqx_license_http_api_SUITE.erl
+++ b/apps/emqx_license/test/emqx_license_http_api_SUITE.erl
@@ -205,14 +205,14 @@ t_license_setting(_Config) ->
     ?assertEqual(0.55, emqx_config:get([license, connection_high_watermark])),
 
     %% update
-    Low1 = <<"50%">>,
+    Low1 = <<"50.12%">>,
     High1 = <<"100%">>,
     UpdateRes1 = request(put, uri(["license", "setting"]), #{
         <<"connection_low_watermark">> => Low1,
         <<"connection_high_watermark">> => High1
     }),
     validate_setting(UpdateRes1, Low1, High1),
-    ?assertEqual(0.5, emqx_config:get([license, connection_low_watermark])),
+    ?assertEqual(0.5012, emqx_config:get([license, connection_low_watermark])),
     ?assertEqual(1.0, emqx_config:get([license, connection_high_watermark])),
 
     %% update bad setting low >= high
diff --git a/mix.exs b/mix.exs
index 74f4ae105..26f49b318 100644
--- a/mix.exs
+++ b/mix.exs
@@ -72,7 +72,7 @@ defmodule EMQXUmbrella.MixProject do
       # in conflict by emqtt and hocon
       {:getopt, "1.0.2", override: true},
       {:snabbkaffe, github: "kafka4beam/snabbkaffe", tag: "1.0.8", override: true},
-      {:hocon, github: "emqx/hocon", tag: "0.40.1", override: true},
+      {:hocon, github: "emqx/hocon", tag: "0.40.2", override: true},
       {:emqx_http_lib, github: "emqx/emqx_http_lib", tag: "0.5.3", override: true},
       {:esasl, github: "emqx/esasl", tag: "0.2.0"},
       {:jose, github: "potatosalad/erlang-jose", tag: "1.11.2"},
diff --git a/rebar.config b/rebar.config
index 7380347f2..eaf82f47b 100644
--- a/rebar.config
+++ b/rebar.config
@@ -84,7 +84,7 @@
     , {system_monitor, {git, "https://github.com/ieQu1/system_monitor", {tag, "3.0.3"}}}
     , {getopt, "1.0.2"}
     , {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "1.0.8"}}}
-    , {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.40.1"}}}
+    , {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.40.2"}}}
     , {emqx_http_lib, {git, "https://github.com/emqx/emqx_http_lib.git", {tag, "0.5.3"}}}
     , {esasl, {git, "https://github.com/emqx/esasl", {tag, "0.2.0"}}}
     , {jose, {git, "https://github.com/potatosalad/erlang-jose", {tag, "1.11.2"}}}