diff --git a/README b/README
index 641cd51..902b12c 100644
--- a/README
+++ b/README
@@ -3,6 +3,8 @@
 
 This is a monorepo. You'll need bash and Bazel 0.20.0+ to use it.
 
+You'll also need Nix installed globally in your system until [rules_nixpkgs/75](https://github.com/tweag/rules_nixpkgs/issues/75) is resolved. Or run on NixOS.
+
 Getting started
 ---------------