diff --git a/scripts/lib/nix.fish b/scripts/lib/nix.fish
index 28e18ff0..d4141acb 100644
--- a/scripts/lib/nix.fish
+++ b/scripts/lib/nix.fish
@@ -18,12 +18,12 @@ begin
 
         if [ ! -d "$nixPkgsCache" ]
             downloadNixPkgs
-            mkdir -p "$nixPkgsDir"
-            cp -r "$nixPkgsCache"/* "$nixPkgsDir"
+            sudo mkdir -p "$nixPkgsDir"
+            sudo cp -r "$nixPkgsCache"/* "$nixPkgsDir"
         end
     end
 
     function uninstallNixPkgs -V nixPkgsDir
-        rm -rf (dirname "$nixPkgsDir")
+        sudo rm -rf (dirname "$nixPkgsDir")
     end
 end