diff --git a/README.adoc b/README.adoc
index e79ccff..427ff9e 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,5 +1,12 @@
 = Snake
 Gabriel Augendre <gabriel@augendre.info>
+ifdef::env-github[]
+:tip-caption: :bulb:
+:note-caption: :information_source:
+:important-caption: :heavy_exclamation_mark:
+:caution-caption: :fire:
+:warning-caption: :warning:
+endif::[]
 :toc:
 
 == Dependencies