diff --git a/css/stylesheet.css b/css/stylesheet.css
index c292e5a..c60a35b 100644
--- a/css/stylesheet.css
+++ b/css/stylesheet.css
@@ -422,6 +422,9 @@ pre.src-desktop:before {
 pre.src-yaml:before {
     content: "YAML";
 }
+pre.src-nix:before {
+    content: "nix";
+}
 /* add a generic configuration mode; LaTeX export needs an additional
    (add-to-list 'org-latex-listings-langs '(conf \" \")) in .emacs */
 pre.src-conf:before {
diff --git a/publish.el b/publish.el
index 7fb6cfd..a335ed5 100644
--- a/publish.el
+++ b/publish.el
@@ -17,6 +17,7 @@
 (use-package htmlize
   :after org)
 (use-package yaml-mode)
+(use-package nix-mode)
 (use-package plz)
 
 (require 'org)