diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 6d9d71c0..fe2751ba 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -56,7 +56,7 @@ There are no particular rules for the body. If something deserves an explanation
 
 ## Formatting
 
-All files should be formatted with `nixpkgs-fmt`.
+All files should be formatted with `nixfmt-rfc-style`.
 This is linted by a PR check.
 
 ## Checks