diff --git a/stack.yaml b/stack.yaml
index 737ed12ba46d390cce566494363d8cdd91b742f8..c4bc68654c595b44ea24ca113b1b2973e7a3ade7 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -66,4 +66,5 @@ extra-deps:
 
 nix:
   enable: true
+  # https://docs.haskellstack.org/en/stable/nix_integration/#using-a-custom-shellnix-file
   shell-file: "stack-shell.nix"