diff --git a/README.md b/README.md
index 1efe9e5..e6cdf5a 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 > an offline-capable xkcd webcomic reader written in Go
 
 [![built with nix](https://builtwithnix.org/badge.svg)](https://builtwithnix.org)
+[![Cachix](https://img.shields.io/badge/cachix-go--xkcdreader-blue.svg)](https://go-xkcdreader.cachix.org)
 
 ### disclaimer
 WIP :construction:
@@ -15,7 +16,8 @@ and also because I wanted to play with `nix` and its flakes just a wee bit.
 > *note on the nix-related steps*: make sure you have
 > [`nix`](https://nixos.org/learn.html) installed and optionally the flake
 > functionality enabled, the Go toolchain and a minimal set of Go development
-> goodies will get pulled in automatically.
+> goodies will get pulled in automatically. you might want to speed up the
+> builds by making use of project's build cache: `cachix use go-xkcdreader`.
 
 that means you can get started:
 ### developing using nix (flakes enabled)