diff --git a/content/install.md b/content/install.md
index aa7f1c3e..beedc871 100644
--- a/content/install.md
+++ b/content/install.md
@@ -69,12 +69,12 @@ of the `upgrade-nix` command.
 Thanks to Nix, we can actually ask Lix to upgrade your system directly. Run the following command:
 
 ```sh
-sudo nix run \
+sudo --preserve-env=PATH nix run \
      --experimental-features "nix-command flakes" \
-     --extra-substituters https://cache.lix.systems \
-     --trusted-public-keys "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=" \
-     'git+https://git@git.lix.systems/lix-project/lix?ref=refs/tags/2.90-beta.0' -- \
-     upgrade-nix
+     --extra-substituters https://cache.lix.systems --extra-trusted-public-keys "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=" \
+     'git+https://git@git.lix.systems/lix-project/lix?ref=refs/tags/2.90-beta.1' -- \
+     upgrade-nix \
+     --extra-substituters https://cache.lix.systems --extra-trusted-public-keys "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o="
 ```
 
 You should now have upgraded to Lix! You can verify this by asking the `nix` command