diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 3f17610..829a7a9 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -56,7 +56,7 @@ One will be created if none exist."
 (package-install 'json-mode)
 (package-install 'lua-mode)
 (package-install 'markdown-mode)
-(package-install 'nix-mode)
+(package-install 'nix-ts-mode)
 (package-install 'yaml-mode)
 
 ;; hooks
@@ -97,9 +97,11 @@ One will be created if none exist."
 (add-hook 'org-mode-hook 'auto-fill-mode)
 
 ;; file extensions
+(require 'nix-ts-mode)
 (add-to-list 'auto-mode-alist '("\\.yuck\\'" . lisp-mode))
 (add-to-list 'auto-mode-alist '("\\.eml\\'" . mail-mode))
 (add-to-list 'auto-mode-alist '("\\.scd\\'" . markdown-mode))
+(add-to-list 'auto-mode-alist '("\\.nix\\'" . nix-ts-mode))
 (add-to-list 'auto-mode-alist '("\\.3lua\\'" . nroff-mode))
 
 ;; treesitter modes