diff --git a/README.md b/README.md
index 4967a52..1b65146 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ A utility pack for handling error.
 
 [deno]: https://deno.land/
 
-> [!WARN]
+> [!WARNING]
 >
 > The package on [deno.land] and [npm] is deprecated. Use the package on
 > [jsr.io] instead.