diff --git a/rebar.config b/rebar.config
index 9ad8f91..9fa50e2 100644
--- a/rebar.config
+++ b/rebar.config
@@ -11,13 +11,13 @@
 
 {project_plugins, [covertool, rebar3_ex_doc, {rebar3_hank, "~> 0.3.0"}]}.
 
-{deps, [{hex_core, "0.8.4"}, {verl, "1.1.1"}]}.
+{deps, [{hex_core, "0.10.1"}, {verl, "1.1.1"}]}.
 
 {profiles, [
     {test, [
         {extra_src_dirs, ["test/support"]},
         {overrides, [{override, rebar3,[{deps, [{erlware_commons, "1.3.1"}]}]}]},
-        {deps, [{hex_core, "0.8.4"},
+        {deps, [{hex_core, "0.10.1"},
                 {erlware_commons, "1.5.0"}, {elli, "3.3.0"},
                 {jsone, "1.5.3"}, {meck, "0.9.0"}]},
         {erl_opts, [nowarn_export_all]}
diff --git a/rebar.lock b/rebar.lock
index 900ed3e..9aa6c4a 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -1,11 +1,11 @@
 {"1.2.0",
-[{<<"hex_core">>,{pkg,<<"hex_core">>,<<"0.8.4">>},0},
+[{<<"hex_core">>,{pkg,<<"hex_core">>,<<"0.10.1">>},0},
  {<<"verl">>,{pkg,<<"verl">>,<<"1.1.1">>},0}]}.
 [
 {pkg_hash,[
- {<<"hex_core">>, <<"FF38B56D164D5987962232C28D769661907B55CE1F058CAECA8E0C8CA5BD85C8">>},
+ {<<"hex_core">>, <<"A2AF5C8D9A00A2E3F4337EFD278384B3F5E538EBE9EC541FAA0709BEAC9EA0C5">>},
  {<<"verl">>, <<"98F3EC48B943AA4AE8E29742DE86A7CD752513687911FE07D2E00ECDF3107E45">>}]},
 {pkg_hash_ext,[
- {<<"hex_core">>, <<"4B8C21FA049515D778395E38B0D0E5D48B7ECDC703BBA1F7007E2651292CE61A">>},
+ {<<"hex_core">>, <<"FD39152D342B7FD4CE3F803AC7F084B60D1BC9BF13E707E35DBDCE266FBB65F0">>},
  {<<"verl">>, <<"0925E51CD92A0A8BE271765B02430B2E2CFF8AC30EF24D123BD0D58511E8FB18">>}]}
 ].
diff --git a/src/rebar3_hex_client.erl b/src/rebar3_hex_client.erl
index c679859..016d998 100644
--- a/src/rebar3_hex_client.erl
+++ b/src/rebar3_hex_client.erl
@@ -26,18 +26,18 @@
 
 -define(is_success(N), N >= 200 andalso N =< 299).
 
-create_user(HexConfig, Username, Password, Email) -> 
+create_user(HexConfig, Username, Password, Email) ->
    Res = hex_api_user:create(HexConfig, Username, Password, Email),
     response(Res).
 
-reset_password(HexConfig, User) -> 
+reset_password(HexConfig, User) ->
     Res = hex_api_user:reset_password(HexConfig, User),
     response(Res).
 
-me(HexConfig) -> 
+me(HexConfig) ->
     Res = hex_api_user:me(HexConfig),
     response(Res).
- 
+
 key_add(HexConfig, <<KeyName/binary>>, Perms) ->
     Res = hex_api_key:add(HexConfig, KeyName, Perms),
     response(Res);
@@ -76,7 +76,7 @@ publish(HexConfig, Tarball, Opts) ->
     Res = hex_api_release:publish(HexConfig, Tarball, Opts),
     response(Res).
 
-delete_release(HexConfig, Name, Version) -> 
+delete_release(HexConfig, Name, Version) ->
     Res = hex_api_release:delete(HexConfig, Name, Version),
     response(Res).
 
@@ -95,14 +95,15 @@ delete_docs(Config, Name, Version) ->
     Res = hex_api:delete(Config, ["packages", Name, "releases", Version, "docs"]),
     response(Res).
 
-retire(Config, Package, Version, Reason, Message) -> 
+-dialyzer({nowarn_function, retire/5}).
+retire(Config, Package, Version, Reason, Message) ->
     Msg = #{<<"reason">> => Reason,
             <<"message">> => Message
            },
     Res = hex_api_release:retire(Config, Package, Version, Msg),
     response(Res).
 
-unretire(Config, Package, Version) -> 
+unretire(Config, Package, Version) ->
     Res = hex_api_release:unretire(Config, Package, Version),
     response(Res).
 
@@ -122,7 +123,7 @@ response({ok, {422, _Headers, #{<<"message">> := <<"Validation error(s)">>} = Re
     {error, Res};
 response({ok, {422, _Headers, Res}}) ->
     {error, Res};
-response({ok, {500, _Headers, Res}}) -> 
+response({ok, {500, _Headers, Res}}) ->
     {error, Res};
 response({_, _} = Unknown) ->
     Unknown.
diff --git a/src/rebar3_hex_retire.erl b/src/rebar3_hex_retire.erl
index 617622d..88915b5 100644
--- a/src/rebar3_hex_retire.erl
+++ b/src/rebar3_hex_retire.erl
@@ -7,8 +7,8 @@
 %% $ rebar3 hex retire PACKAGE VERSION --unretire
 %% '''
 %%
-%% Mark a package as retired when you no longer recommend it's usage. A retired package is still resolvable and usable 
-%% but it will be flagged as retired in the repository and a message will be displayed to users when they use the 
+%% Mark a package as retired when you no longer recommend it's usage. A retired package is still resolvable and usable
+%% but it will be flagged as retired in the repository and a message will be displayed to users when they use the
 %% package.
 %%
 %% <h2> Retirement reasons </h2>
@@ -24,8 +24,8 @@
 %% <h2> Command line options </h2>
 %%
 %% <ul>
-%%  <li>`--repo' - Specify the repository to work with. This option is required when 
-%%      you have multiple repositories configured, including organizations. The argument must 
+%%  <li>`--repo' - Specify the repository to work with. This option is required when
+%%      you have multiple repositories configured, including organizations. The argument must
 %%      be a fully qualified repository name (e.g, `hexpm', `hexpm:my_org', `my_own_hexpm').
 %%   </li>
 %% </ul>
@@ -63,6 +63,7 @@ init(State) ->
     {ok, State1}.
 
 %% @private
+-dialyzer({no_return, do/1}).
 -spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, {?MODULE, rebar3_hex_config:repo_error()}}.
 do(State) ->
         case rebar3_hex_config:repo(State) of
@@ -124,6 +125,7 @@ format_error(bad_command) ->
 format_error(Reason) ->
     rebar3_hex_error:format_error(Reason).
 
+-dialyzer({nowarn_function, retire/6}).
 retire(State, PkgName, Version, Repo, RetireReason, RetireMessage) ->
     HexConfig = rebar3_hex_config:get_hex_config(?MODULE, Repo, write),
     Msg = #{<<"reason">> => RetireReason,