diff --git a/rebar.config b/rebar.config
index d1348592..ed315f97 100644
--- a/rebar.config
+++ b/rebar.config
@@ -8,7 +8,7 @@
         {providers,           "1.8.1"},
         {getopt,              "1.0.1"},
         {bbmustache,          "1.10.0"},
-        {relx,                {git, "https://github.com/erlware/relx.git", {branch, "master"}}},
+        {relx,                "4.0.0"},
         {cf,                  "0.3.1"},
         {cth_readable,        "1.4.8"},
         {eunit_formatters,    "0.5.0"}]}.
diff --git a/rebar.lock b/rebar.lock
index fbad069a..6b3dc310 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -8,10 +8,7 @@
  {<<"getopt">>,{pkg,<<"getopt">>,<<"1.0.1">>},0},
  {<<"parse_trans">>,{pkg,<<"parse_trans">>,<<"3.3.0">>},0},
  {<<"providers">>,{pkg,<<"providers">>,<<"1.8.1">>},0},
- {<<"relx">>,
-  {git,"https://github.com/erlware/relx.git",
-       {ref,"96182ede21c7bbe23c2708514b4a42de0d974d5f"}},
-  0},
+ {<<"relx">>,{pkg,<<"relx">>,<<"4.0.0">>},0},
  {<<"ssl_verify_fun">>,{pkg,<<"ssl_verify_fun">>,<<"1.1.6">>},0}]}.
 [
 {pkg_hash,[
@@ -24,6 +21,7 @@
  {<<"getopt">>, <<"C73A9FA687B217F2FF79F68A3B637711BB1936E712B521D8CE466B29CBF7808A">>},
  {<<"parse_trans">>, <<"09765507A3C7590A784615CFD421D101AEC25098D50B89D7AA1D66646BC571C1">>},
  {<<"providers">>, <<"70B4197869514344A8A60E2B2A4EF41CA03DEF43CFB1712ECF076A0F3C62F083">>},
+ {<<"relx">>, <<"EB91A77B208F7794EC0E70CFCB02E9F76BB35940DDF87C1940F10D8190FD4877">>},
  {<<"ssl_verify_fun">>, <<"CF344F5692C82D2CD7554F5EC8FD961548D4FD09E7D22F5B62482E5AEAEBD4B0">>}]},
 {pkg_hash_ext,[
  {<<"bbmustache">>, <<"43EFFA3FD4BB9523157AF5A9E2276C493495B8459FC8737144AA186CB13CE2EE">>},
@@ -35,5 +33,6 @@
  {<<"getopt">>, <<"53E1AB83B9CEB65C9672D3E7A35B8092E9BDC9B3EE80721471A161C10C59959C">>},
  {<<"parse_trans">>, <<"17EF63ABDE837AD30680EA7F857DD9E7CED9476CDD7B0394432AF4BFC241B960">>},
  {<<"providers">>, <<"E45745ADE9C476A9A469EA0840E418AB19360DC44F01A233304E118A44486BA0">>},
+ {<<"relx">>, <<"6C398119B8912ED5A579FDBF11426B8EE06E95ADB8830CBC9672DE816880F579">>},
  {<<"ssl_verify_fun">>, <<"BDB0D2471F453C88FF3908E7686F86F9BE327D065CC1EC16FA4540197EA04680">>}]}
 ].