diff --git a/apps/explorer/mix.exs b/apps/explorer/mix.exs
index 1dde22eb7f..56345b2e1d 100644
--- a/apps/explorer/mix.exs
+++ b/apps/explorer/mix.exs
@@ -110,7 +110,7 @@ defmodule Explorer.Mixfile do
       # `:spandex` tracing of `:ecto`
       {:spandex_ecto, "~> 0.7.0"},
       # Attach `:prometheus_ecto` to `:ecto`
-      {:telemetry, "~> 1.2.1"},
+      {:telemetry, "~> 1.3.0"},
       # `Timex.Duration` for `Explorer.Counters.AverageBlockTime.average_block_time/0`
       {:timex, "~> 3.7.1"},
       {:con_cache, "~> 1.0"},
diff --git a/mix.lock b/mix.lock
index e961749659..0d4ce3f3bf 100644
--- a/mix.lock
+++ b/mix.lock
@@ -133,7 +133,7 @@
   "spandex_phoenix": {:hex, :spandex_phoenix, "1.1.0", "9cff829d05258dd49a227c56711b19b69a8fd5d4873d8e9a92a4f4097e7322ab", [:mix], [{:phoenix, "~> 1.0", [hex: :phoenix, repo: "hexpm", optional: true]}, {:plug, "~> 1.3", [hex: :plug, repo: "hexpm", optional: false]}, {:spandex, "~> 2.2 or ~> 3.0", [hex: :spandex, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm", "265fe05c1736485fbb75d66ef7576682ebf6428c391dd54d22217f612fd4ddad"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.7", "354c321cf377240c7b8716899e182ce4890c5938111a1296add3ec74cf1715df", [:make, :mix, :rebar3], [], "hexpm", "fe4c190e8f37401d30167c8c405eda19469f34577987c76dde613e838bbc67f8"},
   "statistex": {:hex, :statistex, "1.0.0", "f3dc93f3c0c6c92e5f291704cf62b99b553253d7969e9a5fa713e5481cd858a5", [:mix], [], "hexpm", "ff9d8bee7035028ab4742ff52fc80a2aa35cece833cf5319009b52f1b5a86c27"},
-  "telemetry": {:hex, :telemetry, "1.2.1", "68fdfe8d8f05a8428483a97d7aab2f268aaff24b49e0f599faa091f1d4e7f61c", [:rebar3], [], "hexpm", "dad9ce9d8effc621708f99eac538ef1cbe05d6a874dd741de2e689c47feafed5"},
+  "telemetry": {:hex, :telemetry, "1.3.0", "fedebbae410d715cf8e7062c96a1ef32ec22e764197f70cda73d82778d61e7a2", [:rebar3], [], "hexpm", "7015fc8919dbe63764f4b4b87a95b7c0996bd539e0d499be6ec9d7f3875b79e6"},
   "tesla": {:hex, :tesla, "1.12.1", "fe2bf4250868ee72e5d8b8dfa408d13a00747c41b7237b6aa3b9a24057346681", [:mix], [{:castore, "~> 0.1 or ~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:exjsx, ">= 3.0.0", [hex: :exjsx, repo: "hexpm", optional: true]}, {:finch, "~> 0.13", [hex: :finch, repo: "hexpm", optional: true]}, {:fuse, "~> 2.4", [hex: :fuse, repo: "hexpm", optional: true]}, {:gun, ">= 1.0.0", [hex: :gun, repo: "hexpm", optional: true]}, {:hackney, "~> 1.6", [hex: :hackney, repo: "hexpm", optional: true]}, {:ibrowse, "4.4.2", [hex: :ibrowse, repo: "hexpm", optional: true]}, {:jason, ">= 1.0.0", [hex: :jason, repo: "hexpm", optional: true]}, {:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:mint, "~> 1.0", [hex: :mint, repo: "hexpm", optional: true]}, {:msgpax, "~> 2.3", [hex: :msgpax, repo: "hexpm", optional: true]}, {:poison, ">= 1.0.0", [hex: :poison, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: true]}], "hexpm", "2391efc6243d37ead43afd0327b520314c7b38232091d4a440c1212626fdd6e7"},
   "timex": {:hex, :timex, "3.7.11", "bb95cb4eb1d06e27346325de506bcc6c30f9c6dea40d1ebe390b262fad1862d1", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:gettext, "~> 0.20", [hex: :gettext, repo: "hexpm", optional: false]}, {:tzdata, "~> 1.1", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm", "8b9024f7efbabaf9bd7aa04f65cf8dcd7c9818ca5737677c7b76acbc6a94d1aa"},
   "toml": {:hex, :toml, "0.6.2", "38f445df384a17e5d382befe30e3489112a48d3ba4c459e543f748c2f25dd4d1", [:mix], [], "hexpm", "d013e45126d74c0c26a38d31f5e8e9b83ea19fc752470feb9a86071ca5a672fa"},