diff --git a/hosts/common/packages.nix b/hosts/common/packages.nix
index f56baad..70677f8 100644
--- a/hosts/common/packages.nix
+++ b/hosts/common/packages.nix
@@ -42,6 +42,7 @@
 
   environment.sessionVariables = {
     FLAKE = "/home/mike/.dots";
+    NIX_BUILD_SHELL = "/run/current-system/sw/bin/zsh";
   };
 
   programs.nix-ld = {