diff --git a/setup.sh b/setup.sh
index 397680f..f245fff 100755
--- a/setup.sh
+++ b/setup.sh
@@ -136,7 +136,10 @@ install_nix() {
     fi
 
     log_info "Nix not detected, installing Nix..."
-    curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh install || die "Failed to install Nix"
+    curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix -o install-nix.sh || \
+        die "Failed to download Nix installer"
+    
+    sh install-nix.sh install || die "Failed to install Nix"
 
     log_success "Nix has been installed. Please open a new shell and re-run the script."
     log_info "'~/dotfiles/setup.sh --continue' to continue setup."