diff --git a/mix.exs b/mix.exs
index c54d973e2..9ee8a2eca 100644
--- a/mix.exs
+++ b/mix.exs
@@ -69,7 +69,7 @@ defmodule GroupherServer.Mixfile do
       {:comeonin, "~> 5.3.2"},
       # CORS
       {:corsica, "~> 1.1.2"},
-      {:tesla, "~> 0.10.0"},
+      {:tesla, "~> 1.4.2"},
       # only used for tesla's JSON-encoder
       {:poison, "~> 3.1"},
       # for fake data in test env
diff --git a/mix.lock b/mix.lock
index b356ab1b0..7e3f752c8 100644
--- a/mix.lock
+++ b/mix.lock
@@ -87,7 +87,7 @@
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
   "swarm": {:hex, :swarm, "3.4.0", "64f8b30055d74640d2186c66354b33b999438692a91be275bb89cdc7e401f448", [:mix], [{:gen_state_machine, "~> 2.0", [hex: :gen_state_machine, repo: "hexpm", optional: false]}, {:libring, "~> 1.0", [hex: :libring, repo: "hexpm", optional: false]}], "hexpm", "94884f84783fc1ba027aba8fe8a7dae4aad78c98e9f9c76667ec3471585c08c6"},
   "telemetry": {:hex, :telemetry, "0.4.3", "a06428a514bdbc63293cd9a6263aad00ddeb66f608163bdec7c8995784080818", [:rebar3], [], "hexpm", "eb72b8365ffda5bed68a620d1da88525e326cb82a75ee61354fc24b844768041"},
-  "tesla": {:hex, :tesla, "0.10.0", "e588c7e7f1c0866c81eeed5c38f02a4a94d6309eede336c1e6ca08b0a95abd3f", [:mix], [{:exjsx, ">= 0.1.0", [hex: :exjsx, repo: "hexpm", optional: true]}, {:fuse, "~> 2.4", [hex: :fuse, repo: "hexpm", optional: true]}, {:hackney, "~> 1.6", [hex: :hackney, repo: "hexpm", optional: true]}, {:ibrowse, "~> 4.2", [hex: :ibrowse, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}, {:poison, ">= 1.0.0", [hex: :poison, repo: "hexpm", optional: true]}], "hexpm", "bb10f37d124e2a04950e1642437fc30368cd992bd7370b38eeb3af1ebf1c2029"},
+  "tesla": {:hex, :tesla, "1.4.2", "54fc2c989b63c3c9ff675c2f193d824325a802e61575063363eaa97f471af2ed", [:mix], [{:castore, "~> 0.1", [hex: :castore, repo: "hexpm", optional: true]}, {:exjsx, ">= 3.0.0", [hex: :exjsx, repo: "hexpm", optional: true]}, {:finch, "~> 0.3", [hex: :finch, repo: "hexpm", optional: true]}, {:fuse, "~> 2.4", [hex: :fuse, repo: "hexpm", optional: true]}, {:gun, "~> 1.3", [hex: :gun, repo: "hexpm", optional: true]}, {:hackney, "~> 1.6", [hex: :hackney, repo: "hexpm", optional: true]}, {:ibrowse, "~> 4.4.0", [hex: :ibrowse, repo: "hexpm", optional: true]}, {:jason, ">= 1.0.0", [hex: :jason, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.0", [hex: :mint, repo: "hexpm", optional: true]}, {:poison, ">= 1.0.0", [hex: :poison, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm", "aa3a4130a662a16471a6847fecd4772e2adaf9a4693488f022c612c0bb98c9fd"},
   "timex": {:hex, :timex, "3.7.5", "3eca56e23bfa4e0848f0b0a29a92fa20af251a975116c6d504966e8a90516dfd", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:gettext, "~> 0.10", [hex: :gettext, repo: "hexpm", optional: false]}, {:tzdata, "~> 1.0", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm", "a15608dca680f2ef663d71c95842c67f0af08a0f3b1d00e17bbd22872e2874e4"},
   "tzdata": {:hex, :tzdata, "1.1.0", "72f5babaa9390d0f131465c8702fa76da0919e37ba32baa90d93c583301a8359", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "18f453739b48d3dc5bcf0e8906d2dc112bb40baafe2c707596d89f3c8dd14034"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},