diff --git a/README.md b/README.md
index 8added0..a7dd872 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,8 @@ Afterwards, create a `default.nix` file containing the following:
   (
     let lock = builtins.fromJSON (builtins.readFile ./flake.lock); in
     fetchTarball {
-      url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+      url = with lock.nodes.flake-compat.locked;
+        "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz";
       sha256 = lock.nodes.flake-compat.locked.narHash;
     }
   )