diff --git a/README.md b/README.md
index 0dd0f5b..8a9e04e 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,8 @@ To manually use my binary cache, please add the following config:
 }
 ```
 
+**Important:** As with all binary caches, after adding binary cache to your NixOS configuration, please apply your settings once before enabling CachyOS kernel, so that the binary cache settings can take effect.
+
 This repo also has [Garnix CI](https://garnix.io) set up, and should work as long as the total build time is below the free plan threshold.
 
 [![built with garnix](https://img.shields.io/endpoint.svg?url=https%3A%2F%2Fgarnix.io%2Fapi%2Fbadges%2Fxddxdd%2Fnix-cachyos-kernel)](https://garnix.io/repo/xddxdd/nix-cachyos-kernel)
@@ -165,6 +167,8 @@ To manually use it:
 }
 ```
 
+**Important:** As with all binary caches, after adding binary cache to your NixOS configuration, please apply your settings once before enabling CachyOS kernel, so that the binary cache settings can take effect.
+
 ### Example configuration
 
 ```nix