diff --git a/doc/vision.md b/doc/vision.md
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--- a/doc/vision.md
+++ b/doc/vision.md
@@ -1,5 +1,6 @@
 # Notice
 
+> [!IMPORTANT]
 > This document represented the vision as of the end of 2020. 
 > Since then a number of things have changed (for example we are now using `wgpu`).
 > For a more up-to-date document, see [the roadmap 2023](./roadmap_2023.md).