diff --git a/home/zshrc.nix b/home/zshrc.nix
index 8b9f9dd..9c67cf1 100644
--- a/home/zshrc.nix
+++ b/home/zshrc.nix
@@ -88,7 +88,7 @@
 
 
   function shenv() {
-    nix shell 'system#shenvs.'"$1"
+    NIXPKGS_ALLOW_UNFREE=1 nix shell 'system#shenvs.'"$1" --impure
   }
 
   function use() {