diff --git a/mix.lock b/mix.lock
index d27041b96..24b34c09c 100644
--- a/mix.lock
+++ b/mix.lock
@@ -99,5 +99,4 @@
   "unsafe": {:hex, :unsafe, "1.0.1", "a27e1874f72ee49312e0a9ec2e0b27924214a05e3ddac90e91727bc76f8613d8", [:mix], [], "hexpm"},
   "web_push_encryption": {:hex, :web_push_encryption, "0.2.1", "d42cecf73420d9dc0053ba3299cc8c8d6ff2be2487d67ca2a57265868e4d9a98", [:mix], [{:httpoison, "~> 1.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}, {:poison, "~> 3.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
   "websocket_client": {:git, "https://github.com/jeremyong/websocket_client.git", "9a6f65d05ebf2725d62fb19262b21f1805a59fbf", []},
-  "yamerl": {:hex, :yamerl, "0.4.0", "ae215b1242810a9bc07716b88062f1bfe06f6bc7cf68372091f630baa536df79", [:rebar3], [], "hexpm"},
 }