diff --git a/init.el b/init.el
index cdbd8e0..f495f09 100644
--- a/init.el
+++ b/init.el
@@ -315,6 +315,9 @@
 (use-package json-mode
   :mode "\\.js\\(?:on\\|[hl]int\\(?:rc\\)?\\)\\'")
 
+(use-package nix-mode
+  :mode "\\.nix'")
+
 (use-package markdown-mode
   :mode ("README\\.md\\'" . gfm-mode)
   :custom