diff --git a/shell.nix b/shell.nix
index f71086c..83e9110 100644
--- a/shell.nix
+++ b/shell.nix
@@ -71,9 +71,9 @@ in
 			(pkgs.python3.withPackages(ps: [ migen ]))
 			pkgs.yosys
 			pkgs.nextpnr
-			pkgs.arachne-pnr
 			pkgs.icestorm
 			pkgs.gdb
+			pkgs.mosquitto
 			openocd
 			rustc
 			cargo