diff --git a/blog/content/edition-2/posts/03-vga-text-buffer/index.md b/blog/content/edition-2/posts/03-vga-text-buffer/index.md
index 0bbf92c7..0029e751 100644
--- a/blog/content/edition-2/posts/03-vga-text-buffer/index.md
+++ b/blog/content/edition-2/posts/03-vga-text-buffer/index.md
@@ -305,6 +305,7 @@ We can add a dependency on the `volatile` crate by adding it to the `dependencie
 volatile = "0.2.6"
 ```
 
+Make sure to specify `volatile` version `0.2.6`. Newer versions of the crate are not compatible with this post.
 The `0.2.6` is the [semantic] version number. For more information, see the [Specifying Dependencies] guide of the cargo documentation.
 
 [semantic]: https://semver.org/