diff --git a/docs/source/deploying/performance.md b/docs/source/deploying/performance.md
index fa0c73bf06..23a8d3bffd 100644
--- a/docs/source/deploying/performance.md
+++ b/docs/source/deploying/performance.md
@@ -38,7 +38,7 @@ critical-cli https://example.com/ -o critical.css
 
 You can pass multiple URLs and screen dimmensions and the extracted CSS will be
 optimized (duplicate rules will be eliminated, etc). See the [Advanced preset
-of cssnano](https://cssnano.co/docs/what-are-optimisations/) for details. One last
+of cssnano](https://web.archive.org/web/20230101000000*/https://cssnano.co/docs/what-are-optimisations/) for details. One last
 optimization applied strips all `@import` declarations from the generated CSS.
 
 After that, copy this file to the `public/critical.css` path (configurable