diff --git a/README.md b/README.md
index cab208a..9994767 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
+<center>
+<img src="https://github.com/sunglocto/pi/blob/255bc3749c089e3945871ddf19dd17d14a83f9ff/pi.png">
+</center>
+
 # π
 [![Go](https://github.com/sunglocto/pi/actions/workflows/go.yml/badge.svg)](https://github.com/sunglocto/pi/actions/workflows/go.yml)