diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9150581..198427c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Dev
 
+- Add logo
+
 ## v0.1.0 (2024-04-25)
 
 - Initial release
diff --git a/README.md b/README.md
index 75c82ad..2c6c774 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+<img width="160" src="https://raw.githubusercontent.com/sabiwara/ion/main/images/logo_large.png" alt="Ion">
+
 # Ion
 
 [![Hex Version](https://img.shields.io/hexpm/v/ion.svg)](https://hex.pm/packages/ion)
diff --git a/images/logo_large.png b/images/logo_large.png
new file mode 100644
index 0000000..ebab417
Binary files /dev/null and b/images/logo_large.png differ
diff --git a/images/logo_small.png b/images/logo_small.png
new file mode 100644
index 0000000..6b7c806
Binary files /dev/null and b/images/logo_small.png differ
diff --git a/mix.exs b/mix.exs
index 8a90d98..03295ec 100644
--- a/mix.exs
+++ b/mix.exs
@@ -50,7 +50,7 @@ defmodule Ion.MixProject do
       maintainers: ["sabiwara"],
       licenses: ["MIT"],
       links: %{"GitHub" => @github_url},
-      files: ~w(lib mix.exs README.md LICENSE.md CHANGELOG.md)
+      files: ~w(lib mix.exs README.md LICENSE.md CHANGELOG.md images/logo_small.png)
     ]
   end
 
@@ -64,6 +64,7 @@ defmodule Ion.MixProject do
   defp docs do
     [
       main: "Ion",
+      logo: "images/logo_small.png",
       source_ref: "v#{@version}",
       source_url: @github_url,
       homepage_url: @github_url,