diff --git a/README.html b/README.html
index b20a397..258ee90 100644
--- a/README.html
+++ b/README.html
@@ -291,6 +291,8 @@ href="https://spmenu.speedie.site/index.php/Using+spmenu+on+macOS">this
 wiki article</a> for more information.</p>
 <h2 id="installation-gentoo-gnulinux">Installation (Gentoo
 GNU/Linux)</h2>
+<p>NOTE: The Gentoo overlay may be out of date. Use at your own
+risk!</p>
 <p>If you are on Gentoo GNU/Linux, you can add <a
 href="https://git.speedie.site/speedie-overlay">my overlay</a> which
 includes <code>x11-misc/spmenu</code> as well as other useful
diff --git a/README.md b/README.md
index 73b25cb..b131674 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,8 @@ for more information.
 
 ## Installation (Gentoo GNU/Linux)
 
+NOTE: The Gentoo overlay may be out of date. Use at your own risk!
+
 If you are on Gentoo GNU/Linux, you can add
 [my overlay](https://git.speedie.site/speedie-overlay) which includes
 `x11-misc/spmenu` as well as other useful packages.