diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 17fe20c..aa5ed0a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -84,7 +84,7 @@ jobs:
       matrix:
         include:
           - pair:
-              elixir: 1.5
+              elixir: 1.7
               otp: 22
           - pair:
               elixir: 1.12
diff --git a/mix.exs b/mix.exs
index 21e6b11..846791d 100644
--- a/mix.exs
+++ b/mix.exs
@@ -12,7 +12,7 @@ defmodule Elixometer.Mixfile do
     [
       app: :elixometer,
       version: "1.4.1",
-      elixir: ">= 1.5.0",
+      elixir: ">= 1.7.0",
       description: @description,
       source_url: @project_url,
       homepage_url: @project_url,