diff --git a/README b/README
index 1ae3037..3685ab8 100644
--- a/README
+++ b/README
@@ -27,11 +27,13 @@ DEPLOYMENT
 Use Nix with flakes enabled.
 
 Build binary and run natively:
-nix build && ./result/bin/Purr-musl
+nix build --impure && ./result/bin/Purr-musl
 
 Build and add Docker image to local registry:
 nix build .#purrImage --impure && docker load < result
 
+I'll get rid of the "--impure" requirement ASAP.
+
 DEVELOPMENT & SUPPORT
 
 Please send me an email for support or to provide patches.