diff --git a/README.md b/README.md
index 75ea2a5..89977b1 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,8 @@ Apple Internals
 This repository provides tools and information to help understand and analyze the internals 
 of Apple’s operating system platforms. Information is collected in a text file and 
 [presented on a website](https://mroi.github.io/apple-internals). A [Nix 
-flake](https://github.com/tweag/rfcs/blob/flakes/rfcs/0049-flakes.md) allows to build the 
-following externally hosted tools:
+flake](https://nixos.wiki/wiki/Flakes) allows to build the following externally hosted 
+tools:
 
 [**acextract**](https://github.com/bartoszj/acextract)  
 Unpacks asset catalogs to individual files.