diff --git a/Installation-instructions.md b/Installation-instructions.md
index 884f778..fdd7e86 100644
--- a/Installation-instructions.md
+++ b/Installation-instructions.md
@@ -136,6 +136,9 @@ https://www.freshports.org/mail/snappymail/
 
 https://github.com/the-djmaze/snappymail/issues/96
 
+### NixOS
+https://github.com/NixOS/nixpkgs/tree/master/pkgs/servers/snappymail
+
 ### YunoHost
 
 https://github.com/YunoHost-Apps/snappymail_ynh