diff --git a/mix.exs b/mix.exs
index ddc5b8d..c58afe6 100644
--- a/mix.exs
+++ b/mix.exs
@@ -53,7 +53,7 @@ defmodule Wafer.MixProject do
     devtest = [only: ~w[dev test]a, runtime: false]
 
     [
-      {:circuits_gpio, "~> 1.0", optional: true},
+      {:circuits_gpio, "~> 2.0", optional: true},
       if System.get_env("CI_I2C_1_X") == "true" do
         {:circuits_i2c, "~> 2.0", optional: true}
       else
diff --git a/mix.lock b/mix.lock
index 88df07f..aec7670 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,6 +1,6 @@
 %{
   "bunt": {:hex, :bunt, "0.2.1", "e2d4792f7bc0ced7583ab54922808919518d0e57ee162901a16a1b6664ef3b14", [:mix], [], "hexpm", "a330bfb4245239787b15005e66ae6845c9cd524a288f0d141c148b02603777a5"},
-  "circuits_gpio": {:hex, :circuits_gpio, "1.1.0", "cda895fd0a12fdf50e27f6d61cc349587dff29755fca640b93233a661925d97a", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "11dab3c7b39cbe08588e9527c9fd98117be485f70b61641874abdda50340e991"},
+  "circuits_gpio": {:hex, :circuits_gpio, "2.0.0", "f2882a2011d45eaf0aed6ed96afd60db9c36f5cf7ffb2fe869ab8b4c442f9a4c", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "91a12e551db1eab033ef9d4660eddb0d133508d31577bf2fce55fcbc829708cc"},
   "circuits_i2c": {:hex, :circuits_i2c, "2.0.1", "e9ab22f078b403cafd2c5006fff448f9a790f73c04e9135b7ac22f45f2e63c5c", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "a1567004389b49637fe34d9dd8bdf36c26a53c269e654753860b5c09532bc3c4"},
   "circuits_spi": {:hex, :circuits_spi, "2.0.0", "9198c15c7ffce5bc353e13b7c82df3fe99d7332bd7c28fb9a62c60ce1e7567dc", [:make, :mix], [{:elixir_make, "~> 0.6", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm", "2eddec1fe6486a16f77f72eca91d50a806f9365033d96a517381b61d747612c2"},
   "credo": {:hex, :credo, "1.7.1", "6e26bbcc9e22eefbff7e43188e69924e78818e2fe6282487d0703652bc20fd62", [:mix], [{:bunt, "~> 0.2.1", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "e9871c6095a4c0381c89b6aa98bc6260a8ba6addccf7f6a53da8849c748a58a2"},