diff --git a/mix.exs b/mix.exs
index 08fb3c299..1a80675a4 100644
--- a/mix.exs
+++ b/mix.exs
@@ -29,7 +29,8 @@ defmodule Ejabberd.Mixfile do
      included_applications: [:lager, :mnesia, :inets, :p1_utils, :cache_tab,
                              :fast_tls, :stringprep, :fast_xml, :xmpp, :mqtree,
                              :stun, :fast_yaml, :esip, :jiffy, :p1_oauth2,
-                             :eimp, :base64url, :jose, :pkix, :os_mon, :yconf]
+                             :eimp, :base64url, :jose, :pkix, :os_mon, :yconf,
+                             :p1_acme, :idna]
      ++ cond_apps()]
   end
 
@@ -81,7 +82,7 @@ defmodule Ejabberd.Mixfile do
      {:p1_mysql, "~> 1.0"},
      {:mqtree, "~> 1.0"},
      {:p1_pgsql, "~> 1.1"},
-     {:jiffy, "~> 0.14.7"},
+     {:jiffy, "~> 1.0"},
      {:p1_oauth2, "~> 0.6.1"},
      {:distillery, "~> 2.0"},
      {:pkix, "~> 1.0"},
@@ -89,7 +90,9 @@ defmodule Ejabberd.Mixfile do
      {:eimp, "~> 1.0"},
      {:base64url, "~> 0.0.1"},
      {:yconf, "~> 1.0"},
-     {:jose, "~> 1.8"}]
+     {:jose, "~> 1.8"},
+     {:idna, "~> 6.0"},
+     {:p1_acme, "~> 1.0"}]
     ++ cond_deps()
   end
 
diff --git a/mix.lock b/mix.lock
index 1acc43792..79881d8fd 100644
--- a/mix.lock
+++ b/mix.lock
@@ -3,33 +3,36 @@
   "base64url": {:hex, :base64url, "0.0.1", "36a90125f5948e3afd7be97662a1504b934dd5dac78451ca6e9abf85a10286be", [:rebar], [], "hexpm"},
   "cache_tab": {:hex, :cache_tab, "1.0.20", "00a09975fa6d7ad30407b551ca62f0e901bf36cf4e18bd24cd8c1c517d25b5d4", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
   "distillery": {:hex, :distillery, "2.1.1", "f9332afc2eec8a1a2b86f22429e068ef35f84a93ea1718265e740d90dd367814", [:mix], [{:artificery, "~> 0.2", [hex: :artificery, repo: "hexpm", optional: false]}], "hexpm"},
-  "earmark": {:hex, :earmark, "1.3.5", "0db71c8290b5bc81cb0101a2a507a76dca659513984d683119ee722828b424f6", [:mix], [], "hexpm"},
+  "earmark": {:hex, :earmark, "1.4.1", "07bb382826ee8d08d575a1981f971ed41bd5d7e86b917fd012a93c51b5d28727", [:mix], [], "hexpm"},
   "eimp": {:hex, :eimp, "1.0.12", "c00cdc0ef7159f07e8ec50826d1de9bd051a9538bac772e455927d7f6165abb4", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
   "epam": {:hex, :epam, "1.0.6", "6e57e1f5a330fa02a08ee0d4b16d9161f95177351e48c6dfede2f89b7e2f589f", [:rebar3], [], "hexpm"},
   "eredis": {:hex, :eredis, "1.2.0", "0b8e9cfc2c00fa1374cd107ea63b49be08d933df2cf175e6a89b73dd9c380de4", [:rebar3], [], "hexpm"},
   "esip": {:hex, :esip, "1.0.30", "23d020270590cd6e2785fb33c8bb954e992ed3d469a5b668ceccb56c703888db", [:rebar3], [{:fast_tls, "1.1.2", [hex: :fast_tls, repo: "hexpm", optional: false]}, {:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}, {:stun, "1.0.29", [hex: :stun, repo: "hexpm", optional: false]}], "hexpm"},
-  "ex_doc": {:hex, :ex_doc, "0.21.1", "5ac36660846967cd869255f4426467a11672fec3d8db602c429425ce5b613b90", [:mix], [{:earmark, "~> 1.3", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
+  "ex_doc": {:hex, :ex_doc, "0.21.2", "caca5bc28ed7b3bdc0b662f8afe2bee1eedb5c3cf7b322feeeb7c6ebbde089d6", [:mix], [{:earmark, "~> 1.3.3 or ~> 1.4", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
   "ezlib": {:hex, :ezlib, "1.0.6", "d43a3377006f91c853f65d5efd563d61bbc289f0115a311657c728f5e6e8c39f", [:rebar3], [], "hexpm"},
   "fast_tls": {:hex, :fast_tls, "1.1.2", "ec3b5ba9c5e87f66190196ee8cedffe8f02b9c5b76bb5bc6e81f93d00013ae3a", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
   "fast_xml": {:hex, :fast_xml, "1.1.37", "e5276cd18d5ce5b179da34b6a1232805956f3057ee45833a0d62a9e414c86e07", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
-  "fast_yaml": {:hex, :fast_yaml, "1.0.20", "df9efa0722e99cff12b76c2175fbca1e268ef8949b4b7922e2f966bd2370bd13", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
+  "fast_yaml": {:hex, :fast_yaml, "1.0.21", "3aea577eb57fbb62df79e7c406a453d54d450d35626a19998830e37c767eda67", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
   "goldrush": {:hex, :goldrush, "0.1.9", "f06e5d5f1277da5c413e84d5a2924174182fb108dabb39d5ec548b27424cd106", [:rebar3], [], "hexpm"},
-  "jiffy": {:hex, :jiffy, "0.14.13", "225a9a35e26417832c611526567194b4d3adc4f0dfa5f2f7008f4684076f2a01", [:rebar3], [], "hexpm"},
-  "jose": {:hex, :jose, "1.9.0", "4167c5f6d06ffaebffd15cdb8da61a108445ef5e85ab8f5a7ad926fdf3ada154", [:mix, :rebar3], [{:base64url, "~> 0.0.1", [hex: :base64url, repo: "hexpm", optional: false]}], "hexpm"},
+  "idna": {:hex, :idna, "6.0.0", "689c46cbcdf3524c44d5f3dde8001f364cd7608a99556d8fbd8239a5798d4c10", [:rebar3], [{:unicode_util_compat, "0.4.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
+  "jiffy": {:hex, :jiffy, "1.0.1", "4f25639772ca41202f41ba9c8f6ca0933554283dd4742c90651e03471c55e341", [:rebar3], [], "hexpm"},
+  "jose": {:hex, :jose, "1.8.4", "7946d1e5c03a76ac9ef42a6e6a20001d35987afd68c2107bcd8f01a84e75aa73", [:mix, :rebar3], [{:base64url, "~> 0.0.1", [hex: :base64url, repo: "hexpm", optional: false]}], "hexpm"},
   "lager": {:hex, :lager, "3.6.10", "6172b43ab720ac33914ccd0aeb21fdbdf88213847707d4b91e6af57b2ae5c4d2", [:rebar3], [{:goldrush, "0.1.9", [hex: :goldrush, repo: "hexpm", optional: false]}], "hexpm"},
   "luerl": {:hex, :luerl, "0.3.1", "5412807630aac1aaf59ffe5a1bc09259c447b4faeb1d3fe2d4ef41b87676cb04", [:rebar3], [], "hexpm"},
   "makeup": {:hex, :makeup, "1.0.0", "671df94cf5a594b739ce03b0d0316aa64312cee2574b6a44becb83cd90fb05dc", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.14.0", "cf8b7c66ad1cff4c14679698d532f0b5d45a3968ffbcbfd590339cb57742f1ae", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm"},
-  "mqtree": {:hex, :mqtree, "1.0.4", "69e9f2b5ea31a7fcad9ab3b43e3579e0d4564d682b41906d803f457523f210af", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
+  "mqtree": {:hex, :mqtree, "1.0.5", "9448fd262ac5fd6b502c30abac00978779ae402558c7934b36cad481b2b7ebcd", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
   "nimble_parsec": {:hex, :nimble_parsec, "0.5.1", "c90796ecee0289dbb5ad16d3ad06f957b0cd1199769641c961cfe0b97db190e0", [:mix], [], "hexpm"},
+  "p1_acme": {:hex, :p1_acme, "1.0.1", "c67acfa201b77de1eac47e4ed54308a3046da221ae63ba2eff6ecfb0340a5272", [:rebar3], [{:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:jiffy, "1.0.1", [hex: :jiffy, repo: "hexpm", optional: false]}, {:jose, "1.8.4", [hex: :jose, repo: "hexpm", optional: false]}, {:yconf, "1.0.1", [hex: :yconf, repo: "hexpm", optional: false]}], "hexpm"},
   "p1_mysql": {:hex, :p1_mysql, "1.0.11", "ae20e1daa2c0634bb61c1529d8401b08b855297b1c7d9af980b2e063d8b58482", [:rebar3], [], "hexpm"},
   "p1_oauth2": {:hex, :p1_oauth2, "0.6.5", "a39db41de0287d4d1af3190beaa80edf17335b20f1d0ccace6c09580e0853987", [:rebar3], [], "hexpm"},
   "p1_pgsql": {:hex, :p1_pgsql, "1.1.7", "ef64d34adbbe08258cc10b1532649446d8c086ff8663d44f430d837ec31a89f8", [:rebar3], [], "hexpm"},
   "p1_utils": {:hex, :p1_utils, "1.0.16", "05b5d4fb1f002d827b0d0d344eecdb4208b535bf95264d44f588affec644212b", [:rebar3], [], "hexpm"},
-  "pkix": {:hex, :pkix, "1.0.3", "c40648c74abb745163135d6a41f320f2804a5373ac3dcd5bf69987406d427d39", [:rebar3], [], "hexpm"},
+  "pkix": {:hex, :pkix, "1.0.4", "81d552f736b1cadb278069a332cc94891a1c3095eb6281b340969ee455bd6fea", [:rebar3], [], "hexpm"},
   "sqlite3": {:hex, :sqlite3, "1.1.6", "4ea71af0b45908b5f02c9b09e4c87177039ef404f20accb35049cd8924cc417c", [:rebar3], [], "hexpm"},
   "stringprep": {:hex, :stringprep, "1.0.17", "bf962fe2a4d01298d220b6474689755103f703942a043908ca6cd323e8fa0947", [:rebar3], [{:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
   "stun": {:hex, :stun, "1.0.29", "9678aa90302bda43af86949a6253b82c84535bd1aacdd8de7f052b68234f91b3", [:rebar3], [{:fast_tls, "1.1.2", [hex: :fast_tls, repo: "hexpm", optional: false]}, {:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}], "hexpm"},
-  "xmpp": {:hex, :xmpp, "1.4.0", "03f3d83e48f7d94d7ea306fd1757a0e640c6a6db1d96bbe72abce9cab78c1860", [:rebar3], [{:ezlib, "1.0.6", [hex: :ezlib, repo: "hexpm", optional: false]}, {:fast_tls, "1.1.2", [hex: :fast_tls, repo: "hexpm", optional: false]}, {:fast_xml, "1.1.37", [hex: :fast_xml, repo: "hexpm", optional: false]}, {:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}, {:stringprep, "1.0.17", [hex: :stringprep, repo: "hexpm", optional: false]}], "hexpm"},
-  "yconf": {:hex, :yconf, "1.0.0", "dcf83fd0b8dcd944c33debe00a6cae6684ce135a9c2c1bb6fbdd02258b6895c2", [:rebar3], [{:fast_yaml, "1.0.20", [hex: :fast_yaml, repo: "hexpm", optional: false]}], "hexpm"},
+  "unicode_util_compat": {:hex, :unicode_util_compat, "0.4.1", "d869e4c68901dd9531385bb0c8c40444ebf624e60b6962d95952775cac5e90cd", [:rebar3], [], "hexpm"},
+  "xmpp": {:hex, :xmpp, "1.4.1", "7a41bbeaebaceadcc16128449e1b6d535bb1b9479739064288abbe93f8870170", [:rebar3], [{:ezlib, "1.0.6", [hex: :ezlib, repo: "hexpm", optional: false]}, {:fast_tls, "1.1.2", [hex: :fast_tls, repo: "hexpm", optional: false]}, {:fast_xml, "1.1.37", [hex: :fast_xml, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:p1_utils, "1.0.16", [hex: :p1_utils, repo: "hexpm", optional: false]}, {:stringprep, "1.0.17", [hex: :stringprep, repo: "hexpm", optional: false]}], "hexpm"},
+  "yconf": {:hex, :yconf, "1.0.1", "970fbbe53df7113914488909943abbbe788fff94166b4e39afaebc3e73f2a4f7", [:rebar3], [{:fast_yaml, "1.0.21", [hex: :fast_yaml, repo: "hexpm", optional: false]}], "hexpm"},
 }