diff --git a/bootstrap b/bootstrap
index b9131ad2..5d1b0c86 100755
--- a/bootstrap
+++ b/bootstrap
@@ -43,7 +43,7 @@ main(_) ->
     bootstrap_rebar3(),
 
     %% Build rebar.app from rebar.app.src
-    {ok, App} = rebar_app_info:new(rebar, "3.13.0", filename:absname("_build/default/lib/rebar/")),
+    {ok, App} = rebar_app_info:new(rebar, "3.14.0-rc1", filename:absname("_build/default/lib/rebar/")),
     rebar_otp_app:compile(rebar_state:new(), App),
 
     %% Because we are compiling files that are loaded already we want to silence
diff --git a/rebar.config b/rebar.config
index dc1eceb1..b5310c0b 100644
--- a/rebar.config
+++ b/rebar.config
@@ -9,7 +9,7 @@
         {getopt,              "1.0.1"},
         {bbmustache,          "1.8.0"},
         %% {relx,                "3.33.0"},
-        {relx, {git, "https://github.com/erlware/relx.git", {branch, "4.0.0"}}},
+        {relx, {git, "https://github.com/erlware/relx.git", {tag, "v4.0.0-rc1"}}},
         {cf,                  "0.2.2"},
         {cth_readable,        "1.4.8"},
         {eunit_formatters,    "0.5.0"}]}.
diff --git a/rebar.lock b/rebar.lock
index 50697b43..57034792 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -1,4 +1,4 @@
-{"1.1.0",
+{"1.2.0",
 [{<<"bbmustache">>,{pkg,<<"bbmustache">>,<<"1.8.0">>},0},
  {<<"certifi">>,{pkg,<<"certifi">>,<<"2.5.1">>},0},
  {<<"cf">>,{pkg,<<"cf">>,<<"0.2.2">>},0},
@@ -10,7 +10,7 @@
  {<<"providers">>,{pkg,<<"providers">>,<<"1.8.1">>},0},
  {<<"relx">>,
   {git,"https://github.com/erlware/relx.git",
-       {ref,"ad25111b7349c633fbec30f26c1ad03361d6b806"}},
+       {ref,"e3b61cd8eab04609c4b0e684dfb564e788446d53"}},
   0},
  {<<"ssl_verify_fun">>,{pkg,<<"ssl_verify_fun">>,<<"1.1.5">>},0}]}.
 [
@@ -24,5 +24,16 @@
  {<<"getopt">>, <<"C73A9FA687B217F2FF79F68A3B637711BB1936E712B521D8CE466B29CBF7808A">>},
  {<<"parse_trans">>, <<"09765507A3C7590A784615CFD421D101AEC25098D50B89D7AA1D66646BC571C1">>},
  {<<"providers">>, <<"70B4197869514344A8A60E2B2A4EF41CA03DEF43CFB1712ECF076A0F3C62F083">>},
- {<<"ssl_verify_fun">>, <<"6EAF7AD16CB568BB01753DBBD7A95FF8B91C7979482B95F38443FE2C8852A79B">>}]}
+ {<<"ssl_verify_fun">>, <<"6EAF7AD16CB568BB01753DBBD7A95FF8B91C7979482B95F38443FE2C8852A79B">>}]},
+{pkg_hash_ext,[
+ {<<"bbmustache">>, <<"190EA2206128BDFABF5D9200B8DF97F6511D9C62953655828E28C2BC79161252">>},
+ {<<"certifi">>, <<"805ABD97539CAF89EC6D4732C91E62BA9DA0CDA51AC462380BBD28EE697A8C42">>},
+ {<<"cf">>, <<"48283B3019BC7FAD56E7B23028A5DA4D3E6CD598A553AB2A99A2153BF5F19B21">>},
+ {<<"cth_readable">>, <<"46C3BB14DF581DC7A9DC0CB9E8C755BFF596665FB9A23148DD76E3A200804E90">>},
+ {<<"erlware_commons">>, <<"7AADA93F368D0A0430122E39931B7FB4AC9E94DBF043CDC980AD4330FD9CD166">>},
+ {<<"eunit_formatters">>, <<"D6C8BA213424944E6E05BBC097C32001CDD0ABE3925D02454F229B20D68763C9">>},
+ {<<"getopt">>, <<"53E1AB83B9CEB65C9672D3E7A35B8092E9BDC9B3EE80721471A161C10C59959C">>},
+ {<<"parse_trans">>, <<"17EF63ABDE837AD30680EA7F857DD9E7CED9476CDD7B0394432AF4BFC241B960">>},
+ {<<"providers">>, <<"E45745ADE9C476A9A469EA0840E418AB19360DC44F01A233304E118A44486BA0">>},
+ {<<"ssl_verify_fun">>, <<"13104D7897E38ED7F044C4DE953A6C28597D1C952075EB2E328BC6D6F2BFC496">>}]}
 ].